Careful. My cat Mystic used to do that when I was in the tub.
Then one day he slipped & fell in & turned in to a claw-flailing dynamo. I nearly lost my bits altogether & got lots of nasty scratches in awkward places in the effort to get us both out of the tub.

I don't know about living forver, but enough of an extended span to do all the things I want to do, yeah. Say 7 years of not aging for every normal human year. That'd put my span at about 490. That sounds about right.