Hi, my cat just chewed on a small weed outside that looked like hairy bittercress.
Could you check if this is toxic for cats?
Please also look for plants from the same family, as I'm not 100% sure I identified it correctly.
Hairy bittercress (`Cardamine hirsuta`) is a member of the Brassicaceae family, also known as the mustard family. While hairy bittercress is not considered highly toxic to cats, it's still best to watch your cat for any signs of gastrointestinal upset, such as vomiting or diarrhoea.

Other members of the Brassicaceae family include:

* Broccoli (`Brassica oleracea`)
* Brussels sprouts (`Brassica oleracea var. gemmifera`)
* Cabbage (`Brassica oleracea var. capitata`)
* Cauliflower (`Brassica oleracea var. botrytis`)
* Kale (`Brassica oleracea var. acephala`)
* Mustard greens (`Brassica juncea`)
* Radishes (`Raphanus sativus`)
* Turnips (`Brassica rapa`)

These plants are also not considered to be highly toxic to cats, but it's still best to supervise your cat when they are outside and prevent them from eating any plants that you're unsure about. If you notice any unusual behaviour or symptoms in your cat after they've eaten a plant, you should contact your veterinarian right away.