Loyalty is rare in the animal kingdom, still certain species show monogamous behaviours like that of Beavers and Gibbons.

Macaroni penguins tend to congregate in a corner ... to stay together if they’ve had successful breeding seasons. If an egg is laid, the keepers determine whether it is the offspring of two ...

PITTSBURGH (KDKA) — A macaroni penguin at the Pittsburgh Zoo named Mickey is one of the oldest in North America after celebrating her 40th birthday. Mickey turned 40 over the weekend ...