Thanks ladies, it's a bit of a mixed bag to be honest. When they got him under they x-rayed the tooth, and despite the big chip on it decided the pulp and root were healthy, so they've left it. They did clean his teeth, remove a cyst from his back, a wart off his lip and trim his toenails. They also discovered he still has cruciate damage in that bad knee, in fact it's in both, and he also has quite bad arthritis in there too
He didn't do very well under the GA, his BP dropped, so instead of operating on his knees it will be managed with painkillers. Poor little lad
He'll be ready for collection soon.