Is it normal for my chicken to sit on or ride my bunny outside?

This is part of dominance behavior, and the one humping the other is showing she is the top bunny. I wouldn't be concerned about it, but I would stop any aggression and separate them immediately. By the way, I love their names :-)

If the rabbits are unfamiliar with one another, the larger ones are very likely to try and dominate the smaller ones. Yes, there may be some sexual dominance taking place but I assure you if the ages you stated are correct they are not capable of breeding yet. If they are small breed rabbits, they usually are not capable of breeding until at least months, with larger breed rabbits closer to 7-8 months. If you are noting any aggression, I would remove the older ones from the younger ones as to avoid any injuries or deaths from occurring. I know, rabbit fighting sounds a little ridiculous, but I have seen rabbit injuries from fights. They usually aren't deadly or anything, but can require veterinary care.

Thanks for reaching out about Bounty. This sounds like a situation with new bird parents and not sure what they are doing. Males will often sit on the nest while the female forages for food. So this seems extreme behavior but not necessarily odd. Good luck.

Thanks for using Petco Pet Education Center, formerly Petcoach! It would be unlikely that she can get them sick though it is always possible. I think it is fine especially if they are all doing well and have been dewormed and everything. I bet they are all adorable! Have a good day!

This sounds potentially quite dangerous as Bun Bun could suffer trauma or predation while out on her adventures. I would recommend keeping her in a rabbit enclosure or a closed room inside your house, especially when you’re leaving the house and not supervising her. She can free roam when you’re there to keep an eye on her, but if you’re opening the door to leave or having people over, she should be confined. This will prevent her running out the door again. As for not remembering your sister, she probably does but may still be on high alert from her outside events and may need some time to calm down and respond more normally to people. As a prey species, rabbits are always on high alert for dangers, and the chemicals in her body need some time to adjust to the change in scenario.

Thanks for using Petco Pet Education Center, formerly Petcoach! This is in fact most likely normal. Nursing from a young kitten is expected to some extent and that will likely go away on its own. Rosie humping Callie is likely a display of dominant behavior which is somewhat typical when having two animals in the same place. This will all most likely get better with time. Good luck and have a great day!

Yes! This is good behavior. They are bonding. When birds become good friends, they will tap their beaks together in a kind of ‘budgie kiss’, and will preen each other’s face and head. There is nothing to worry about here. Best wishes.