Alexander Аkimovadded a comment 7 years ago
Q: Which one is correct:
-I've seen animals at the zoo
-I've seen animals in the zoo
A: Both are correct. Animals are "in" the zoo. Visitors are "at" the zoo. So you saw the animals which were in the zoo while you were at the zoo.
-I've seen animals at the zoo - I was at the zoo when I saw them
-I've seen animals in the zoo - the animals were in the zoo when I saw them