DALLAS (KDAF) — Happy, belated, birthday Gus! Dallas Zoo announced one of its hippos, Gus, turned 4 years old on Thursday.

According to a tweet, Gus got to celebrate his big day with his two favorite ladies, Boipelo and Adanna. The zoo said some of his favorite humans were present for birthday celebrations as well.

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Hippos can be territorial animals so zookeepers are never sharing the same space as hippos. The zoo clarified that his favorite caretakers celebrated, and provide care, through a barrier.