aren't plants also sentient?
Isn't all life sentient?
If not, where do you draw the line? "It has eyes and bilateral symmetry and an endoskeleton looks vaguely human-like so I can anthropomorphize it"? "Only members of the animal kingdom are conscious"?
No, plants, bacteria, mushrooms are obviously not sentient as they lack a brain.
Do you think plants achieve the same degree of sentience as say, a pig? Or would drawing even that line be too arbitrary for you?