The Los Angeles Zoo has its' first brand new baby hippo in 26 years thanks to sneaky 10-year-old hippo Mara, who totally skipped her birth control pills and did it with a young, hot hippo named Adhama. Mara went in to surprise labor on Halloween. Trick!

KTLA reports:

Mara had been putting on weight lately, so those around her thought something was up. But she was on birth control, so if there was to be a baby, that would be a bit of a surprise.

Surprise! No word on how Adhama—who's only 3—feels about all this.

At least the new baby, whose sex has yet to be determined, is cute.

[Photos via KTLA]