You’ve probably never been in a zoo, seen a giraffe, and thought, “Wow, that’s great camouflage.” Biologists don’t know why giraffes have their unique diamond patterns, but some believe that they are a holdback from when giraffes may have camouflaged within substantially different terrain.
Many of the current relatives to giraffes live in forests, not savannahs. Today, camouflage may be a way that giraffes identify each other or even find mates. But this highlights something interesting. Because of the way that evolution works, animals can be left with camouflage that’s no longer relevant to how they live.