TIL The number of ants on Earth has a mass greater than all birds and mammals combined. There are roughly 20 quadrillion ants in the world, around 2.5 million per human.
TIL African wild dogs use sneezes to cast their vote on whether they are ready to begin a hunt. Researchers noted a minimum number of sneezes required to rally the group, with sneezes from dominant individuals worth more than other dogs.
TIL severed fingertips can sometimes regenerate, but mostly this only occurs for kids and only if some fingernail remains.