We've thought about elevating our pen. But, that brings up other issues such as tames clipping into and through the floors on server restarts. Gets expensive having to replace floor tiles just to get a tame moving again.
As title says. All tames were inside a full stone base with all stone floors and double walls 2 foundations apart. Snake spawned inside base and killed all tames. But, I'm glad snakes don't get stuck on bamboo anymore, or walls.