CHICAGO (CBS) -- People are not the only ones who get to celebrate Valentine's Day.

Several animals at Brookfield Zoo received heart-shaped treats from the animal care staff on Wednesday to celebrate Valentine's Day.

The western lowland gorillas, southern hairy-nosed wombats, and Przewalski's horses' received valentines made of a complete-balanced biscuit and gelatin; and the gray seals received heart-shaped gelatin goodies.

The zoo's animal care staff are "always thinking of ways to physically and mentally stimulate the animals. One way is by providing them with a variety of different enrichment and food items they normally do not receive on a regular basis."

Below are some of the love-filled moments captured.