I've heard about how you're supposed to stay away from animal feces and not really sure if that applies to all animals or what the risk of "exposure" to feces might be. Are there any other risks associated with contact with the animals themselves? It's not a petting zoo, but there may contact with the birds in the bird house...?
FWIW, 1st-trimester-specific considerations don't apply. I'm into my 7th month.