You can disable your cache for any reason. Guidelines suggest that your cache should be sound and lasting, but I've seen plenty of 'seasonal' caches. Snakes rank pretty low on my list of worries while caching and I think if you mentioned the risk on the cache page and added the attribute most people wouldn't object to it.
I'd vote to just keep it active. Up the terrain rating and modify the attributes and description.
I would have to temporarly disable it for 4 months!