Animals Escaping. Animals not giving birt, and animals beeing put right to trade center when born? Polar bear happitat to large?

[Kibaschikorra]

I have the alarm saying that animals escapes all the time, all tho they are in happitat.

Ihave animals saying they are near birth but after a cupple of hours playing they still have not given birth.

I have animals giving birth plenty of space in the happitat but they are put in trade center.