Don't worry
By the time this gets to the USSC the animal will be long dead and easten by insects and other critters.
These PETA Idiots do need to be takes down a peg or two for even considering this sort of case.
The USA, The land where it is possible to file suite against anything any everything and they do just that because they can.
There are now so many law grads in the US that without this sort of thing there would be thousands of them unemployed.(no bad thing if you ask me)