That looks like the entire canine tooth, root and all. The canine is a single rooted tooth, and the largest rooted tooth (the root is typically 2/3 the size of the entire tooth itself). My only concern would be infection; a tooth that comes out WHOLE with no breakage often indicates there was infection present in the first place that broke down the ligaments and attachments. It wouldn't hurt to swing by the vet just to make sure there isn't infection present and, since the canine is the largest rooted tooth and leaves the largest hole in the gum/jaw, I would make sure there is nothing stuck up in there and make sure it doesn't need to be sutured closed, but I would not consider it an ER visit.

Good luck... and a side-note, drooling is often a sign of oral pain in cats.

Quote Originally Posted by kuhio98 View Post
Their teeth are so tiny, but our vet charges about $100 a tooth for an extraction.
:O That is crazy! Even canine 3-root teeth extractions we certainly don't charge anywhere near $100 per extraction!!! Or very often our cat FORL dental or greyhound dentals would cost over a thousand dollars!!!!!