True Patriot
Sanity is subjective
It's not impossible. And not being able to get back out might cause a snake to regurgitate it's meal. Looks like you may be looking for a decent size snake. If you think it got under you may want to bury a hardware cloth skirt around the cage to prevent future visits.No chicken inside - only thing I can see getting in underneath is a snake and would have to flatten it self to get in and lift cage that has five chickens in it