A female African lion named Isis died just days after her mate at Brookfield Zoo in Chicago's western suburbs.
The Brookfield Zoo has welcomed five new Mexican gray wolf puppies.
The male and female pups, born Feb. 23, are the first successful river otter births in the zoo's history.
Bunny, one of the zoo's reindeer, gave birth to a male fawn Wednesday morning. The last time a reindeer was born at the zoo was in 1980.
An otter was released into the wild in Barrington on Monday after it was implanted with a chip that allows for its activities and behavior to be tracked.
The Brookfield Zoo says things are going well between its newest arrival, a 21-year-old female polar bear named Nan, and her possible breeding partner, an 11-year-old male polar bear named Hudson.