My cat once brought in a North American shrew in the house and I thought “what a weird looking mouse!” So, I went to scoop it up in a dust pan and drop it out side and the little shit bit my finger! Anyways, got it outside and went to look it up and found out they (the NA shrew) were venomous! Luckily the bite was superficial and I only had slight redness for the night.

Fun fact about the shrew is apparently it is highly territorial and can defend a territory of > 1 square mile, and somehow my cat found the one shrew in a sq mile area in our backyard which is like a 1/16 acre neighborhood plot lol