The five bear cubs in Wild Enclosure #4 have formed a cub family. Although only two of them (Lemon Drop and Cosmo) are actual siblings, they act like they are all from one litter. As we know, adult bears, especially males, are solitary for most of their lives, but when they are cubs, it is easy for them to bond with other cubs.
It is interesting to see how well the cubs adapt to their unrelated “siblings.” They wouldn’t be so receptive of the others if they were older, but it works for now.