Horses, camels and cats very often clip. In regards of player or camera collision, those animals don’t appear to have a hitbox for their head, so they always clip into you. Because of that, hostile animals will very often clip into me or my followers while fighting. If you participate in the fight (especially with the lock-on feature) you will also very often hit your own companion.
When harvesting, horse and camel will very often clip into me as well, getting hurt.
Also, often when the head of an animal reaches into my screen, the game thinks I’m targetting its head, usually resulting in my character aiming into the sky when trying to hit a rock or iron node.
Kinda don’t want to take any of those followers with me, since I find myself spending much time tip-toeing around these issues. Humanoid NPCs tend to behave a bit better in that regard.