in those dont hurt the animal levels i always have a hard time trying to keep them safe. i was wondering if there was a method of trapping or putting them to sleep that worked in most situations.
I thought I had answered your question there... Do you need more than that? Bear trap works on some levels too.
or (this one uses a lot of objects though, kupo) spawn something to fly in/on and tether the animal to it, move it away and trap it with a wall, kupo. Time using but effective, kupo.
Spawn 2 or more walls...if they can't fly. Just glue "lift bridge" or "roof" on top of the walls if they can fly...