Bunny suddenly aggressive

photo for attention

Hello everyone, I’m here to ask for opinions and get some answers.

My almost 6yo bunny Averell, has become since a couple of weeks extremely aggressive towards his bunny companion (5yo girl), my party and I.

I have him since he was 3 months old, castrated since he was 6 months, and always been vaccinated yearly; I went to the vet (the same trusted exotic one I go since 6 years) to do a full body check, nothing is broken, no tumours, blood work done (with every possible illness check) and all good, urine/feces good as well, no hear infection, cardiologist said heart is good, teeth are good and never had issues; Checked with every possible specialist my vet has and everything is coming back fine.

Nothing has changed in the house, same room and space to hang around, same litter/pellet, same food and hay; I have no other animals or no new people are in the house.

I was suspecting some neurological issues, like dementia or something related (?). Anything similar happened to any of you?

Thanks for your help.

photo for attention

Hello everyone, I’m here to ask for opinions and get some answers.

My almost 6yo bunny Averell, has become since a couple of weeks extremely aggressive towards his bunny companion (5yo girl), my party and I.

I have him since he was 3 months old, castrated since he was 6 months, and always been vaccinated yearly; I went to the vet (the same trusted exotic one I go since 6 years) to do a full body check, nothing is broken, no tumours, blood work done (with every possible illness check) and all good, urine/feces good as well, no hear infection, cardiologist said heart is good, teeth are good and never had issues; Checked with every possible specialist my vet has and everything is coming back fine.

Nothing has changed in the house, same room and space to hang around, same litter/pellet, same food and hay; I have no other animals or no new people are in the house.

I was suspecting some neurological issues, like dementia or something related (?). Anything similar happened to any of you?

Thanks for your help.