SafeVegetables
Updated:2026-09-28 · Food code:FOOD-VEG-0038
西洋菜 配图

WatercressNasturtium officinale

Watercress

Nasturtium officinale
Also known as:watercress
CatSafe

Cats need no vegetables, so a small washed sprig of watercress is at most a novel treat that adds a little water.

Feeding advice:One small teaspoonful, chopped (blanched for older cats or those with weaker immunity), without reducing main-diet intake and within about 10% of daily energy intake.
Preparation:Rinse each sprig under running water, trim the coarse stems, blanch until soft and chop very finely; add no seasoning and never dress it with vinaigrette.
DogSafe

Watercress is very low in calories and provides vitamin C, vitamin K, vitamin A and a little calcium, so it makes a light green vegetable treat now and then.

Feeding advice:1-2 tablespoons of chopped watercress per serving (about a teaspoon for a small dog) within about 10% of daily energy intake, with complete dog food as the main diet.
Preparation:Rinse each sprig under running water to lift the grit, trim the coarse stems, then either offer a small amount raw or blanch until soft and chop it; **add no salt, oil, vinegar, garlic or dressing**.

Nutrition

Per 100 g, edible portion
Energy · kcal/100g
11
Protein
2.3 g
Fat
0.1 g
Carbohydrates
1.29 g
Dietary fiber
0.5 g
Water
95.11 g

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

Cat · Safe feeding conditions

Safe

No additional condition notes for this food

Clinical and veterinary sources

1
Merck Veterinary Manual
Toxicology — Food Hazards (Merck Veterinary Manual)
Accessed:2024-09-15View source ↗
2
WSAVA (World Small Animal Veterinary Association)
Global Nutrition Guidelines
Accessed:2024-10-20View source ↗
Benefits

Cats need no vegetables, so a small washed sprig of watercress is at most a novel treat that adds a little water.

Feeding advice

One small teaspoonful, chopped (blanched for older cats or those with weaker immunity), without reducing main-diet intake and within about 10% of daily energy intake.

Preparation

Rinse each sprig under running water, trim the coarse stems, blanch until soft and chop very finely; add no seasoning and never dress it with vinaigrette.

Notes

**Wash watercress thoroughly, as it grows in water**, and blanch it for cats with weaker immunity; brassica glucosinolates may affect the thyroid, so keep it small and never feed dishes with onion, garlic or dressing.

Dog · Safe feeding conditions

Safe

No additional condition notes for this food

Clinical and veterinary sources

1
Merck Veterinary Manual
Toxicology — Food Hazards (Merck Veterinary Manual)
Accessed:2024-09-15View source ↗
2
WSAVA (World Small Animal Veterinary Association)
Global Nutrition Guidelines
Accessed:2024-10-20View source ↗
Benefits

Watercress is very low in calories and provides vitamin C, vitamin K, vitamin A and a little calcium, so it makes a light green vegetable treat now and then.

Feeding advice

1-2 tablespoons of chopped watercress per serving (about a teaspoon for a small dog) within about 10% of daily energy intake, with complete dog food as the main diet.

Preparation

Rinse each sprig under running water to lift the grit, trim the coarse stems, then either offer a small amount raw or blanch until soft and chop it; **add no salt, oil, vinegar, garlic or dressing**.

Notes

**Wash watercress thoroughly, as it grows in water**, and blanch it for puppies or weaker patients since raw greens carry bacteria; brassica glucosinolates may affect the thyroid, so keep servings small and skip vinaigrette or onion soup.

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.