In The Matrix, Agent Smith has this quote during his monologue with Morpheus.
Smith: I realized that you're not actually mammals. Every mammal on this planet instinctively develops a natural equilibrium with their surrounding environment, but you humans do not.
Leaving aside the fact that this is not true, has Morpheus ever seen an animal (of any kind) outside of the Matrix, or are the Humans that are kept alive by the machines the only life that survived?
It’s unlikely they have animals for food, given Dozer’s quote
Dozer: It's a single-celled protein combined with synthetic aminos, vitamins, and minerals. Everything the body needs.
alongside the fact that Cypher apparently sold out the crew for a steak. But that just tells us that there aren’t cows or chickens.
Is there any evidence of non-human (multicellular) life outside the Matrix?