Come the fuck on with this post dude. Do farmers douse the kittens in gasoline and burn them alive? If so, that's a very messed up way to deal with farm cats. I'm not inherently saying killing an animal automatically makes you a sociopath...
Anyway to you address your point further, Avery burned his family's cat alive for no valid reason (his excuse is the go-to "young, dumb and with the wrong crowd"). Couple that with the fact that this coward has a history of beating his wife/ex-fiance, allegedly choked his ex-fiance to the point of unconsciousness... take that how you will... at the end of the day Avery is still a shit human being.