Omg hey I never actually introduced myself.
I'm Sir Slips, or Slippy, the most dapper frog you'll ever meet.
I stream a lot of stuff. Erm. Yeah. HIIII.
@Sadazeyt Also letting each of them have their own designated space should help. It looks like the one seems very territorial of the cat tree. Maybe get the other one a "domain" of its own?
@Sadazeyt Cats do normally play aggressively with eachother and as time goes on they SHOULD get less agressive with eachother. I think it's fine right now but you should definitely keep an eye out for any hissing and loud screams coming from them.