Wolves Teleport Onto Cacti and Won't Walk Off

Two times now, my wolf when following me has teleported onto a cactus and stood completely still, just taking damage. If I hadn't broken the cacti, it most definitely would've died. Even if the teleporting part isn't necessarily a bug, it seems to me that the wolves' pathfinding would at least tell them to walk away so as to not take damage, which is not happening.