When using a polar bear spawn egg on a polar bear, it creates baby polar bears. This behavior is not in line with how it is supposed to work, as noted by the resolution of MC-2871. Since polar bears can not be bred by any means in game, they do not fit the requirements for their spawn egg to have such a behavior (only breedable mobs fit the requirements). Update: This also affects zombie horse spawn eggs and skeleton horse spawn eggs.
Comments 2
That has nothing to do with the situation. They do not exist through breeding, they simply spawn in when the world is generated, and as such do not meet the criteria for spawn eggs to spawn baby polar bears. The mobs/animals themselves must be breedable in game in some form, which polar bears are not.
Polar bears always spawn with babies