Did you know that just like humans, cows make friends with one another and become distressed when separated from their BFFs? Or that male penguins with a crush offer their female counterparts pebbles and if she accepts the gift… the pair become partners for life? How about the fact that tigers' legs are so strong they can remain standing, even when dead!? These are the sorts of interesting and random facts artist Harjeet Singh has collected about the animal kingdom, displaying his little gems of knowledge alongside the cutest illustrations. Check it out!