CautionDairy
Updated:2026-09-28 · Food code:FOOD-DAI-0001
牛奶 配图

MilkBos taurus (lac)

Milk

Bos taurus (lac)
Also known as:whole milk, cow's milk
CatCaution

Most cats are lactose intolerant and milk causes diarrhoea; using milk as a regular extra can also crowd out the main diet and cause nutritional imbalance.

DogCaution

Adult dogs generally have low lactase activity, so lactose ferments in the gut and causes bloating, loose stools and diarrhoea; whole milk is about 3.3% fat, adding extra calories.

What to do after ingestion

Feeding risk and emergency notice · Contact a veterinarian or an emergency animal hospital immediately; do not rely on this site alone
Symptoms

Diarrhoea, loose stools, gas, vomiting, reduced appetite.

What to do

Stop feeding and monitor; seek veterinary care if diarrhoea persists or the cat becomes lethargic.

Why it is risky

Most cats are lactose intolerant and milk causes diarrhoea; using milk as a regular extra can also crowd out the main diet and cause nutritional imbalance.

What to do after ingestion

Feeding risk and emergency notice · Contact a veterinarian or an emergency animal hospital immediately; do not rely on this site alone
Symptoms

Diarrhoea or loose stools, gas, abdominal discomfort, reduced appetite; some dogs vomit.

What to do

Stop the milk and monitor; seek care if diarrhoea lasts more than 24 hours, contains blood, or the dog becomes lethargic.

Why it is risky

Adult dogs generally have low lactase activity, so lactose ferments in the gut and causes bloating, loose stools and diarrhoea; whole milk is about 3.3% fat, adding extra calories.

Nutrition

Per 100 g, edible portion
Energy · kcal/100g
61
Protein
3.15 g
Fat
3.25 g
Carbohydrates
4.8 g
Dietary fiber
0 g
Water
88.13 g

Data source:USDA FoodData Central · SR Legacy · Accessed on:2026-09-28

Cat · Safe feeding conditions

Caution

No additional condition notes for this food

Clinical and veterinary sources

1
ASPCA Animal Poison Control Center
People Foods to Avoid Feeding Your Pets
Accessed:2024-10-08View source ↗
Why it is risky

Most cats are lactose intolerant and milk causes diarrhoea; using milk as a regular extra can also crowd out the main diet and cause nutritional imbalance.

Symptoms

Diarrhoea, loose stools, gas, vomiting, reduced appetite.

What to do

Stop feeding and monitor; seek veterinary care if diarrhoea persists or the cat becomes lethargic.

Notes

Kittens need mother's milk or a dedicated kitten milk replacer, never cow's milk; adult cats need clean water and a complete cat food.

Dog · Safe feeding conditions

Caution

No additional condition notes for this food

Clinical and veterinary sources

1
ASPCA Animal Poison Control Center
People Foods to Avoid Feeding Your Pets
Accessed:2024-10-08View source ↗
2
WSAVA (World Small Animal Veterinary Association)
Global Nutrition Guidelines
Accessed:2024-10-20View source ↗
Why it is risky

Adult dogs generally have low lactase activity, so lactose ferments in the gut and causes bloating, loose stools and diarrhoea; whole milk is about 3.3% fat, adding extra calories.

Symptoms

Diarrhoea or loose stools, gas, abdominal discomfort, reduced appetite; some dogs vomit.

What to do

Stop the milk and monitor; seek care if diarrhoea lasts more than 24 hours, contains blood, or the dog becomes lethargic.

Notes

Lactose tolerance drops after weaning; milk cannot replace water (diarrhoea worsens dehydration) or a complete diet. Small amounts of plain yoghurt or grated cheese are usually tolerated better if you want to give dairy.

Disclaimer and individual health notes

This website is for reference only and does not replace a licensed veterinarian. If your pet has eaten a suspected toxin or shows symptoms, contact a veterinarian or an emergency animal hospital immediately.