How bizarre!!!
So this only happens to cats... not dogs?
I didn't expect to see those pictures. I thought I was just going to see snakes which don't frighten or gross me out in the least.
Do the snakes go in the entire way? What kind of snakes are these, and where is this happening so I can avoid these snakes? Is it normal or usual behavior for these snakes to crawl into other animals? I can't imagine that noses are that snake's habitat or its normal place for obtaining food.
Blind Snakes are found in Australia.
They look almost exactly like Earthworms and they are often mistaken for them. They come in shades of pink all the way through to shades of grey. They behave in very much the same way as Earthworms too.
These guys are harmless and can't bite at all. To top it off, they aren't venomous.
They eat termites!
They burrow under soil and their normal habitat is under rocks or piles of rotting leaves or soft soil etc. They aren't very common and I've only ever seen one in person.