Is this a sign of aggression, or is he just being playful?
He often does it after eating & pooping/peeing all over his playpen (all progress over the last 4 days of litter training has been lost since he fetches food outside his litter tray & eats it wherever he feels like. I've tried multiple litter-trays. Maybe giving him chew toys also sent the wrong message that he can take them apart & take their pieces anywhere) but that's probably just because he feels energetic after eating. But then he also likes to show-off his speed & jumping skills at night, so I'm not sure.
by just_a_curious_fella