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Animal hoarding

It often begins with love for animals. Getting help protects the animals and the person who cares about them.

⏱ 4 min read📑 11 sections📚 14 sources✅ Reviewed October 2026

By the numbers

What research shows about animal hoarding.

The people

538 peoplewith animal hoarding were described across studies in a 2023 review. Most were middle-aged women living alone in cities.
76%of 54 people in an early U.S. study were women, and 46% were 60 or older. About half lived alone.
About 57%of 33 people with animal hoarding in a Brazilian study also hoarded objects.

The animals

39was the typical number of animals per home in the U.S. study. Four homes had more than 100.
Cats & dogsare the animals most often involved, many of them born through unplanned breeding.
23 yearswas the average time people in the Brazilian study had lived with many animals.

Afterwards

13–41%of people began hoarding animals again after a case was resolved, across the studies in the 2023 review.
81% vs 27%of people who hoard animals, compared with ordinary pet owners, described their animals as having human-like thoughts and feelings in one study.
Animal hoarding is hard to study, so most research uses small groups found through animal welfare agencies. Real numbers may be different.

What animal hoarding is

Many animals, and not being able to meet their basic needs.

Animal hoarding means keeping more animals than a person can care for. The animals don’t get enough food, clean space, shelter or vet care, and the person often doesn’t see the harm.

Many people who hoard animals truly believe they are helping or rescuing them. Their love for animals is real, even when the care has become impossible.

🐕 Many pets is not hoardingHaving lots of animals that are well cared for is not animal hoarding.
Read more

Having several animals does not, by itself, mean someone is hoarding. What matters is whether each animal’s basic needs are being met.

Signs animals are well cared for

  • Clean water and enough food every day
  • Regular vet care
  • Space to move, rest and be clean
  • The owner knows each animal and how it is doing
🏚️ How it differs from object hoardingSimilar in some ways, but often with more squalor and less insight.
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Like object hoarding, animal hoarding involves great difficulty letting go and strong attachment. But almost every home where animals are hoarded has animal waste in living areas, while squalor is less common with object hoarding.

Experts think animal hoarding may have different causes and need a different kind of help, so a careful assessment matters.

🏠 Rescues that become overwhelmedIt can also happen in groups that set out to rescue animals.
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Large-scale hoarding can happen within rescues or shelters that don’t recognize the harm they are causing.

Good rescues have clear limits on how many animals they take in, and they find homes for animals rather than keeping them all.
This guide explains research and is not a diagnosis. If you’re worried about yourself or someone else, a clinical provider or therapist can help.

Why it can happen

Love, loss, early life and a deep need to rescue. Tap any card.

Researchers are still learning why animal hoarding happens. Most think it grows from a mix of attachment, life experiences and how a person sees their animals.

🛟 A mission to rescueFeeling that only you can save these animals.
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Many people who hoard animals feel it is their sole responsibility to save animals in need. They may feel a strong urge to take in more to protect them from harm.

Some feel they have a special ability to understand and communicate with animals.

🧒 Early life and attachmentAnimals may have been a safe comfort when people weren’t.
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People who hoard animals more often describe chaotic childhoods and weaker bonds with parents than other pet owners. Researchers think animals may have become a safer source of love.

Animal hoarding is often linked with troubled relationships with people and, frequently, chaotic or traumatic childhoods.

🕯️ Loss and hard timesSome people begin taking in animals after a loss or trauma.
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Some people began gathering animals after a traumatic event or a loss. Illness, money problems or grief can also overwhelm someone who once cared well for their animals.

For support with loss, see Grief: understanding loss.
🐱 Seeing animals as peopleStrongly giving animals human thoughts and feelings.
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In one study, 81% of people who hoard animals described their animals as having human-like thoughts and feelings, compared with 27% of other owners. This can create a heavy sense of responsibility.

Feeling close to animals is good for many people. It becomes a problem only when it gets in the way of seeing what the animals actually need.
🙈 Not seeing the harmMost people who hoard animals don’t notice how bad things have become.
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A lack of awareness about the animals’ suffering seems to be part of most, if not all, animal hoarding. The person may keep taking in animals even as their health declines.

Researchers think not seeing it may partly protect the person’s sense of self and self-worth.

🧠 Health and brain changesDementia and other conditions can be part of the picture.
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A review of severe animal hoarding found that people were often older and socially isolated. Dementia, OCD and other mental health conditions were among common underlying causes.

An early public health study said animal hoarding may be a sign of mental health problems or dementia that need prompt, caring assessment.

For a deeper look at hoarding in general, see Why hoarding happens.

Different paths into it

Researchers describe a few different patterns.

Not everyone who hoards animals is the same. Researchers describe different patterns, and knowing them can help the right kind of support reach the right person.

😓 Overwhelmed caregiverSomeone who once cared well, until life became too much.
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These are often lonely people who started out caring well for their animals. Illness, money problems or a loss then made it impossible to keep up.

🦸 RescuerSomeone on a mission to save every animal.
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Rescuers see saving animals as a mission. They often resist letting animals be adopted and may have a network of people who bring them more animals.

Respecting their love for animals, while focusing on what each animal needs, can open the door to change.
⚖️ A smaller, different groupA few people keep animals mainly to meet their own needs.
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Researchers describe a smaller group who gather animals mainly for their own needs, such as control, and who show little empathy for the animals.

These situations usually need firm action from animal welfare and legal agencies.

Many people who hoard animals are lonely, struggling and deeply attached to their animals. Compassion helps them accept support.

Signs someone may need help

What animal welfare experts look for.

It can be hard to know when a love of animals has turned into something harmful. Animal welfare experts point to a set of signs that, together, suggest help is needed.

Signs to notice

  • A home in poor repair, with heavy clutter or very dirty conditions
  • Animals that are very thin, tired or not used to people
  • Fleas, pests or vermin
  • More animals than the person can count
  • Not being able to give animals food, a clean space, shelter or vet care
  • Signs the person is isolated, not caring for themselves, or declining in health
  • Strong smells and floors covered in animal waste
One sign alone doesn’t mean someone is hoarding animals. Having many animals is not, by itself, a warning sign.
If you’re worried, the “Worried about someone” worksheet can help you write down what you’ve noticed before you reach out.

Health and safety for people and animals

Why animal hoarding is a health concern for everyone in and around the home.

Animal hoarding affects the health and safety of people, animals and neighbors. Public health experts describe it as an under-recognized problem found in most communities.

🐈 For the animalsIllness, hunger and overcrowding are common.
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Animals in these homes often face poor nutrition, overcrowding and dirty conditions. Disease, injury and behavior problems are common.

In the early U.S. study, animals were found in poor condition, or had died, in 80% of cases.

🧍 For the personDirty air and living conditions affect health.
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Most homes where animals are hoarded have unsanitary conditions. Animal waste in living areas is found in nearly all of them.

People in these homes are often isolated and may be neglecting their own health and care.

🏘️ For family and neighborsChildren, older adults and neighbors can be affected too.
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Because animal hoarding affects health, safety and the environment, solving it often takes several agencies working together over time.

If children live in the home, see “Children and partners in the home” in When someone you love hoards.
These homes can carry real health risks. Leave entering and clearing them to trained animal welfare and public health workers.

Leading with compassion

How to talk with someone who may be hoarding animals.

Shame and fear of losing their animals can make people hide or refuse help. Kindness makes it more likely they will accept support.

💬 Helpful things to sayStart with their love for the animals.
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Words that can help

  • “I can see how much you care about them.”
  • “It’s okay to ask for help. Lots of people need it.”
  • “The animals need some care right now. Can we get them help together?”
  • “I’m worried about you too.”
The ASPCA suggests reassuring the person that accepting help is okay and that the animals need urgent care.
🚫 What usually backfiresShaming, threats and arguments tend to push people away.
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People who hoard animals often don’t see the harm, so arguing about it rarely helps. Shame can lead them to hide animals or refuse contact.

Being kind doesn’t mean waiting while animals suffer. You can be gentle with the person and still contact the right agency.
🧭 Caring for the person tooThe person often needs mental health and practical support.
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Experts say good help includes mental health and medical care for the person, not just veterinary care for the animals.

Social services such as the local department on aging, adult protective services, health departments and mental health agencies can all help.

How animals get help

Who to contact if animals are suffering.

If animals are suffering, it’s important to get them help. In the U.S., this usually means contacting the agency that enforces animal laws in your area.

Who to contact

  1. If animals or people are in danger right now, call 911.
  2. Contact a local hoarding task force, if your area has one.
  3. Otherwise, contact local animal control, the police, a humane society or SPCA, or a veterinarian.
  4. If you’re not sure who handles animal laws, ask your local police or animal control.
  5. Contact social services too, so the person gets support, not just the animals.
🧯 Hoarding task forcesLocal teams that bring different agencies together.
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The ASPCA suggests contacting a local hoarding task force first, if one exists. The IOCDF keeps a list of task forces by state and country.

Animal hoarding cases are often complex and may take a long, multi-agency effort to resolve.

🙋 Ways to helpVolunteering and staying involved make a difference.
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Ideas from the ASPCA

  • Help with daily care if animals return home
  • Help make sure animals are spayed or neutered and vaccinated
  • Stay in touch with the person
  • Volunteer at a local shelter with cleaning, walking or socializing animals
Laws and agencies differ from place to place. This is general information, not legal advice.

After the animals are safe

Why ongoing support matters, for the person and for the animals.

Removing animals doesn’t end the story. Without support for the reasons behind it, animal hoarding often comes back. Across studies, 13% to 41% of people began hoarding again.

💔 Grief and lossLosing the animals can feel like losing family.
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Because the bond with animals is an emotional one, giving them up is very different from letting go of objects. It can bring real grief.

Grief support can help, even when the person agreed the animals needed to go. See Grief: understanding loss.
🔁 Preventing a returnOngoing contact and support lower the chance it happens again.
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Experts call for better ways to prevent people from hoarding animals again, to protect both animals and people.

The ASPCA encourages staying involved, helping with daily care and making sure any animals are spayed or neutered and vaccinated.

🫂 Filling the gapConnection with people can ease the loneliness animals once filled.
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People who hoard animals are often isolated. Animals may have been their main source of comfort and connection.

Volunteering with animals under supervision, or joining a community group, can offer connection safely. See Loneliness: understanding it.
Research on treating animal hoarding is still very limited. Experts recommend help that brings together mental health, medical and veterinary care.

If you’re worried about yourself

A few words if you feel you may have too many animals to care for.

If you’ve started to feel your animals are more than you can manage, noticing that takes courage. It shows how much you care about them.

Asking for help is not failing your animals. It is one of the most loving things you can do for them, and for yourself.

Small first steps

  • Ask a vet about low-cost spay and neuter options to stop more animals arriving
  • Pause before taking in any new animal
  • Reach out to a local shelter or rescue about rehoming some animals
  • Talk with your clinical provider or a therapist about how you’re feeling
  • Tell one person you trust what’s going on
For the good that animals bring, and healthy ways to enjoy them, see Pets & your wellbeing.

When and where to get help

Help for the person, the family and the animals.

It’s time to reach out if animals aren’t getting food, clean space or vet care, if the home has become unsafe, or if someone seems unable to look after themselves.

A path to support

  1. For the animals: contact local animal control, a humane society or SPCA, or the police.
  2. For the person: encourage a visit to a clinical provider to check health, mood and memory.
  3. Look for a therapist who understands hoarding, using the IOCDF Resource Directory.
  4. For an older adult who can’t stay safe alone, contact Adult Protective Services or local aging services.
  5. For families: find support for yourself, like a family support group.
🔎 Finding helpThe IOCDF lists therapists, clinics and support groups.
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The IOCDF Resource Directory at hoarding.iocdf.org lists therapists, clinics, programs and support groups by location.

The IOCDF also lists over 200 support groups, including groups for families and caregivers.

🌐 Outside the U.S.Local animal welfare groups and family doctors can help.
Read more

Outside the U.S., contact your local animal welfare organization or authorities about animals in need, and a family doctor about support for the person.

If you need to talk to someone now, findahelpline.com lists free, confidential helplines in many countries.

If you’re in crisis, call or text 988 (U.S.). If people or animals are in immediate danger, call 911.

📝 Worksheets for this guide

Fill these in privately in the app. Your answers stay on your phone.

Animal care checkAn honest, private look at whether each animal’s needs are being met.
Worried about someone: my notesWrite down what you’ve noticed and who to contact, so you can act calmly.
My animals and my limitsPlan how to keep loving animals in a way that’s healthy for them and for you.
🔒 Fill in privately in the Mentally United Wellness App. Free, no ads, no accounts.

Sources

  1. ASPCA (American Society for the Prevention of Cruelty to Animals). Animal Hoarding
  2. ASPCA (American Society for the Prevention of Cruelty to Animals). Recognizing and Reporting Animal Abuse and Neglect
  3. International OCD Foundation (IOCDF) Hoarding Center. Subtypes & Related Disorders
  4. International OCD Foundation (IOCDF) Hoarding Center. Hoarding Task Forces (directory)
  5. International OCD Foundation (IOCDF) Hoarding Center. How to Use the Resource Directory
  6. International OCD Foundation (IOCDF) Hoarding Center. Find a Support Group
  7. NHS (UK National Health Service) (2026). Hoarding disorder
  8. Peer-reviewed research (PubMed, NIH) (1999). Hoarding of animals: an under-recognized public health problem in a difficult-to-study population (Patronek, Public Health Reports)
  9. Peer-reviewed research (PubMed Central, NIH) (2011). Comparison of object and animal hoarding (Frost, Patronek & Rosenfield, Depression and Anxiety)
  10. Peer-reviewed research (PubMed, NIH) (2017). Animal Hoarding Disorder: A new psychopathology? (Ferreira et al., Psychiatry Research)
  11. Peer-reviewed research (PubMed, NIH) (2023). Animal hoarding: a systematic review (Stumpf et al., Brazilian Journal of Psychiatry)
  12. Peer-reviewed research (PubMed Central, NIH) (2022). The Complexity of the Human–Animal Bond: Empathy, Attachment and Anthropomorphism in Human–Animal Relationships and Animal Hoarding (Prato-Previde, Basso Ricci & Colombo, Animals)
  13. Peer-reviewed research (PubMed, NIH) (2022). Noah Syndrome: A Review Regarding Animal Hoarding with Squalor (Innovations in Clinical Neuroscience)
  14. Peer-reviewed research (PubMed, NIH) (2010). General public health considerations for responding to animal hoarding cases (Castrodale et al., Journal of Environmental Health)

This guide is for education and self-care. It is not a diagnosis or a substitute for professional care. Please talk to a counselor or clinical provider about your health. Reviewed October 2026.

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