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 73–96 of 996 articles

🐁Mouse HealthAug 2, 2026

🦷Dental

Overgrown Teeth in Pet Mice: Signs, Causes & Treatment

A mouse's front teeth never stop growing, and when the top and bottom incisors stop meeting, they overgrow and make eating painful. Learn why mouse malocclusion happens, the signs to watch for, and why overgrown incisors need a vet's dental burr, never nail clippers.

🐟Fish HealthAug 2, 2026

🍽️Eating & Drinking

Goldfish Not Eating: Causes, Fixes, and When to Worry

When your goldfish stops eating, the water is usually the real story. Here's how to find the cause, water quality first, then temperature, stress, diet, and disease, with a simple step-by-step plan and the red flags that mean it's time to call an aquatic vet.

🐈Cat HealthAug 2, 2026

🦷Dental

How to Brush Your Cat's Teeth: A Gentle Step-by-Step Guide

Brushing your cat's teeth sounds impossible — until you have a plan. This gentle, vet-informed guide covers the right cat toothpaste, a slow week-by-week training routine, proper technique, how often to brush, and the warning signs that mean it's time to call your vet.

🐈Cat HealthJul 31, 2026

🍽️Eating & Drinking

Overweight Cat: How to Tell and Help Them Lose Weight Safely

Most pet cats carry extra weight, and it's easy to miss. Learn how to check your cat's body condition, why extra pounds raise real health risks, and how to help your cat lose weight slowly and safely, without the dangers of crash dieting.

🐁Mouse HealthJul 31, 2026

🐛Parasites

Skin Mites (Mange) in Pet Mice: Signs, Treatment & Care

Skin mites, often called mange, are a common cause of itchy, scabby fur loss in pet mice. Learn the signs, how a vet diagnoses and treats fur mites with prescription ivermectin or selamectin, and how mites differ from harmless barbering.

🐁Mouse HealthJul 31, 2026

🩺Chronic & Systemic

Mammary Tumors in Pet Mice: Signs, Causes, and Kind Choices

Finding a lump on your pet mouse is scary — and in mice, mammary tumors are usually malignant and can appear almost anywhere under the skin. Here's how to spot one, what your treatment options are, and how to make kind, loving decisions about your mouse's comfort and quality of life.

🐁Mouse HealthJul 31, 2026

Barbering in Pet Mice: Bald Patches With Healthy Skin

Noticed a smooth bald patch on your mouse, but the skin looks perfectly healthy? That is often barbering — fur or whisker trimming done by a cage-mate or the mouse itself, not a skin disease. Here is how to spot it, tell it apart from mites, and help your mice.

🐕Dog HealthJul 31, 2026

🦷Dental

How to Brush Your Dog's Teeth: A Step-by-Step Guide

Brushing your dog's teeth is the single most effective way to protect their mouth between vet visits. Here's a gentle, step-by-step routine, the right tools, and the warning signs that mean it's time to call your vet.

🐁Mouse HealthJul 30, 2026

💨Respiratory

Mouse Respiratory Infection: Signs, Causes, and When to See a Vet

Clicking, sneezing, or labored breathing in a pet mouse usually points to a respiratory infection — the most common serious illness mice face. Learn the causes, the warning signs, what an exotic vet can do, and how to prevent flare-ups.

🐭Gerbil HealthJul 30, 2026

Gerbil Nasal Dermatitis (Sore Nose): Causes, Signs, and Treatment

That red, crusty patch around your gerbil's nose is nasal dermatitis, the most common gerbil skin problem. It starts with a stress-driven surge of Harderian gland porphyrin, then a secondary Staph infection. Learn the causes, the treatment, and the simple husbandry fixes that prevent it.

🐕Dog HealthJul 30, 2026

Dog Door Dashing: Why Your Dog Bolts Out the Door and How to Stop It

Door dashing — when your dog bolts through an open door — is a self-rewarding habit, not defiance. Learn why dogs do it, how it differs from panic-driven escape like separation anxiety, and the management plus training steps that keep your dog safely inside.

🐭Degu HealthJul 30, 2026

🤮Digestive

Degu Bloat and GI Stasis: Why It's a Life-Threatening Emergency

If your degu has stopped eating and the droppings have dried up, don't wait. GI stasis and gas bloat can turn fatal within hours in these tiny herbivores. Learn the red flags, why it's a same-day emergency, and how your vet treats and prevents it.

🐈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.

🐭Degu HealthJul 29, 2026

Degu Bumblefoot: Spotting, Treating, and Preventing Sore Footpads

Bumblefoot is a painful pressure sore on a degu's footpads — and it's largely preventable. Here's how to spot it early, why solid floors and wheels matter most, and when your degu needs an exotics vet.

🐈Cat HealthJul 29, 2026

Why Cats Knock Things Off Tables (and How to Stop It)

Your cat sweeps a pen off the desk while staring you down, but it isn't spite. Here's the real mix of hunting instinct, curiosity, and attention-seeking behind it, plus how to redirect the behavior and when knocking things over is worth a vet visit.

🐈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.

🐟Fish HealthJul 29, 2026

Velvet Disease in Betta Fish: Spotting and Treating the Gold-Dust Killer

Velvet is a fine gold-dust parasite that attacks a betta's gills first and spreads fast. Learn to spot it with a flashlight, tell it apart from ich, and treat it in the dark.

🐕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.

🐭Degu HealthJul 28, 2026

🦷Dental

Degu Overgrown Teeth: Dental Disease Signs, Care & Prevention

Degus have teeth that grow for life, and without enough hay to grind them down they can overgrow into painful dental disease. Here's how to read the orange-teeth colour clue, spot the early signs, and protect your degu's smile.

🐭Degu HealthJul 28, 2026

Degu Cataracts: Cloudy Eyes and the Diabetes Connection

Cataracts turn a degu's eyes cloudy white or grey — and in this diabetes-prone species, that cloudiness is often one of the first changes owners notice. Here's how to spot cataracts, why diet is the root cause, and how to protect your degu's sight.

🐈Cat HealthJul 28, 2026

Cat Wool Sucking: Why Cats Suck, Chew, and Eat Fabric (and When It's Dangerous)

Wool sucking is when a cat compulsively suckles, chews, or even eats wool, blankets, and other fabrics. It sits on a spectrum with pica, shows up most in Siamese and other Oriental breeds, and is usually harmless until fabric gets swallowed, which can cause a life-threatening intestinal blockage. Here is what drives it, how to manage it gently at home, and the warning signs that mean you need a vet now.

🐟Fish HealthJul 28, 2026

Columnaris in Betta Fish: The 'Cotton' Disease That Isn't Fungus

That white cottony fuzz on your betta's mouth or fins looks like fungus but is usually columnaris — a fast-moving bacterial disease that warm water makes worse. Here's how to recognize, treat, and prevent it.

🐟Fish HealthJul 27, 2026

🤮Digestive

Goldfish Constipation: Signs, Causes, and How to Help

A constipated goldfish trails stringy feces, bloats, and may start to float or sink. Here is how to spot it, gentle ways to help at home, and when a swollen belly signals something more serious.