Is "zwierzę" in here nominative?
Yes, its nominative neuter.
Hi I got it wrong, but the solution that wasshowed was " That animal has a meal.", and that is wrong as well... I reported it but wanted to explain a bit.
Yeah, removing that, without further context this just means something different.
why is THIS animal wrong?
Because with "this" it would be "To zwierzę je posiłek", but if it's "tamto", it's not THIS one here, it's THAT one over there.
This is so stupid because of "a meal" i made wrong answer.