Sorry about your cat.
The bass, when the vocals start and from then on it's low end on the low notes is too loud/boomy. (listening with JBL LSR305s with traps behind them.) Really noticeable too during the louder parts like around 5:00.
Firstly, I really enjoyed the track. Nice little dedication to an old friend. I have Cats and have lost a few over the years so I know what it's like.
There's a BUZZ that comes in to the track at 1:28. (End of the intro) It disappears at 5:56. That's all I got at the minute. I wasn't really listening critically, I was just enjoying the music.