Pet Health Library

Guides to pet symptoms and conditions, cited to the veterinary literature — what's normal, what's not, and when to see a vet.

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Showing 1–24 of 57 articles found

🐈Cat HealthAug 19, 2026

🐾Behavior & Training

Introducing a New Kitten to a Resident Cat: A Step-by-Step Plan

Introduce a new kitten to your resident cat through separation, scent exchange, barrier meetings, and short supervised sessions. Let both cats' behavior—not a fixed calendar—set the pace.

🐕Dog HealthAug 18, 2026

🐾Behavior & Training

Introducing a New Puppy to a Resident Dog: A Safe Step-by-Step Plan

A calm introduction starts before the puppy comes through the door. Learn how to arrange a neutral first meeting, manage food and rest spaces, read both dogs' body language, and decide when they are ready for more freedom together.

🐭Degu HealthAug 4, 2026

🐾Behavior & Training

Degu Fur Chewing: Why It Happens and How to Fix It

A degu chewing its own fur, or a cage-mate's, is usually a stress or enrichment problem. But mites, ringworm and pain look almost identical. How to tell them apart, and what to change at home.

🐈Cat HealthJul 30, 2026

🐾Behavior & Training

Cat Petting-Induced Aggression: Why Your Cat Bites During Petting (and How to Stop It)

Your cat rolls over for a cuddle, then suddenly bites your hand and stalks off. That's petting-induced aggression, or overstimulation, and it isn't spite. Here's how to read the warning signs, pet your cat the way it prefers, and know when a sudden change means pain.

🐕Dog HealthJul 29, 2026

🐾Behavior & Training

Dog Marking in the House: Why Dogs Urine-Mark Indoors and How to Stop It

Housebroken dog suddenly peeing indoors? It may be urine marking - a form of communication, not a potty accident. Learn how marking differs from house-training gaps and medical accidents, why dogs mark, and the vet-backed, punishment-free way to stop it, starting with ruling out a medical cause.

🐈Cat HealthJul 29, 2026

🐾Behavior & Training

Cat Aggression Toward Other Cats: Why They Fight and How to Help

Cats aren't natural roommates. Learn why housemates fight — territorial, fear, redirected, and play aggression — how to tell real tension from rough play, and a patient, vet-backed plan of separated resources and slow re-introduction to help them coexist.

🐕Dog HealthJul 28, 2026

🐾Behavior & Training

Dog Leash Reactivity: Why Your Dog Barks and Lunges on Walks (and How to Help)

Leash reactivity is when a dog barks, lunges, or growls at other dogs, people, or bikes while on the leash. It is an emotional reaction rooted in fear, frustration, or over-arousal, not defiance or true aggression. Here is what really drives it, the reward-based training that helps, why harsh tools backfire, and when to loop in your vet.

🐈Cat HealthJul 27, 2026

🐾Behavior & Training

Why Is My Cat So Clingy and Following Me Everywhere?

Does your cat follow you from room to room and wait outside the bathroom door? Here's why cats become “velcro cats,” when clinginess is normal versus a sign of stress or illness, and how to help your shadow feel secure.

🐭Chinchilla HealthJul 20, 2026

🐾Behavior & Training

Chinchilla Fur Chewing: Why It Happens and How to Help

Fur-chewing gives a chinchilla a short, patchy, moth-eaten coat because it chews its own fur. Learn the causes, how to tell it apart from ringworm and fur slip, the husbandry fixes that help, and when a vet visit matters.

🐕Dog HealthJul 13, 2026

🐾Behavior & Training

Dog Resource Guarding: Why Dogs Protect Food, Toys, and Spaces (and How to Help Safely)

Resource guarding is a normal, instinct-driven behavior, not a bid for dominance. Learn to read the warning signs, why you should never punish a growl, and the humane, reward-based way to teach your dog that people approaching means good things.

🐕Dog HealthJul 13, 2026

🐾Behavior & Training

Why Does My Dog Dig? Causes, Breed Instincts, and How to Stop It Humanely

Dogs dig from instinct, boredom, heat, prey, or anxiety. Here's how to spot the reason behind the holes and stop the digging humanely, without punishment.

🐕Dog HealthJul 13, 2026

🐾Behavior & Training

How to Crate Train a Puppy: A Humane, Positive Step-by-Step Guide

Crate training taps a puppy's natural den instinct to aid house-training, safe management, and calm rest. Here's how to do it the humane, positive way: choosing the right crate and size, building up time at your puppy's pace, setting realistic limits, and handling whining without fear.

🐈Cat HealthJul 13, 2026

🐾Behavior & Training

Why Do Cats Knead? The Truth About "Making Biscuits"

Kneading, or "making biscuits," is one of the most endearing things cats do. Here's what the rhythmic paw-pushing really means, why it sometimes comes with claws and drool, and when it's worth a closer look.

🐈Cat HealthJul 13, 2026

🐾Behavior & Training

Why Does My Cat Eat Plastic? Pica Causes, Dangers, and How to Stop It

Chewing or eating plastic is a form of pica—and it can be more than a quirk. Here's what drives it, the medical causes your vet should rule out, the genuine dangers of swallowed plastic, and how to keep your cat safe.

🐕Dog HealthJul 12, 2026

🐾Behavior & Training

How to Potty Train a Puppy: A Complete House-Training Guide

Those first weeks of puppy accidents are normal — and fixable. Here's the vet-informed system: a realistic timeline, the bladder rule, humane crate training, how to handle accidents, and how to tell a training slip from a medical problem.

🐕Dog HealthJul 12, 2026

🐾Behavior & Training

How to Stop Your Dog From Pulling on the Leash (Without Force)

Why dogs pull on the leash and how to fix it humanely: reward-based loose-leash training, the right harness, realistic timelines, and when pulling signals a vet visit.

🐕Dog HealthJul 12, 2026

🐾Behavior & Training

How to Stop Your Dog Jumping Up on People: A Reward-Based Guide

Dogs jump up to greet you and get attention — and almost any reaction can reinforce it. Here's how to stop jumping with reward-based training: reward four on the floor, teach a sit-to-greet default, manage the door, stay consistent, and know when over-arousal warrants a vet visit.

🐈Cat HealthJul 12, 2026

🐾Behavior & Training

Why Is My Cat Spraying? Urine Marking Triggers and How to Stop It

Cat spraying is urine marking, a stress-driven communication behavior that is different from litter-box accidents. Learn the triggers, how neutering and environment changes help, and when it's a medical emergency.

🐈Cat HealthJul 12, 2026

🐾Behavior & Training

Why Does My Cat Bite Me? Play Biting and Petting-Induced Aggression Explained

Most cat biting isn't true aggression — it's play or overstimulation. Learn why your cat bites during play and petting, how to read the warning signs, and how to stop it.

🐕Dog HealthJul 11, 2026

🐾Behavior & Training

How to Stop a Puppy From Biting and Nipping

Those needle-sharp puppy teeth on your hands are almost always normal play, not aggression. Here is how to teach bite inhibition, redirect the mouthing, and know the rare signs that mean it is time to call your vet.

🐕Dog HealthJul 11, 2026

🐾Behavior & Training

How to Stop a Dog From Barking Too Much: A Calm, Vet-Informed Guide

Barking is normal dog communication, but nonstop barking usually has a specific cause. Learn the common types of barking, how to reduce it with reward-based training, what not to do, and when barking is a sign to call your vet.

🐕Dog HealthJul 11, 2026

🐾Behavior & Training

Why Does My Dog Eat Grass? Is It Bad, and When to Worry

Grass-eating is very common in dogs and usually harmless. Here's what the research says about why dogs do it, why the "eating grass to vomit" idea is mostly a myth, when treated lawns and toxic plants make it risky, and the signs it's time to call your vet.

🐕Dog HealthJul 11, 2026

🐾Behavior & Training

Why Is My Dog Chewing Everything? How to Stop Destructive Chewing

Dogs chew from teething, boredom, anxiety, and more. Learn the real causes of destructive chewing in puppies and adult dogs, how to stop it with the right toys and training, and the danger signs — swallowed objects, toxins, pica — that mean it's time to call your vet.

🐈Cat HealthJul 11, 2026

🐾Behavior & Training

How to Stop a Cat From Scratching Furniture (Humane Fixes)

Scratching is normal, necessary cat behavior — you can't stop it, only redirect it. Here's how to protect your furniture with the right scratching posts, placement, and deterrents, plus humane alternatives to declawing and when scratching signals a vet visit.