The hairy frogfish (Antennarius striatus) uses a vacuum in its mouth to suck in prey that is as large as it is in just 1/6000th of a second. Despite having only 5mm palatal teeth, it has the fastest ‘bite’ in the animal kingdom. – WTF Fun Facts
Source:
animal kingdom
baby blue whales gain 250 pounds a day wtf fun
Baby blue whales gain 250 pounds a day – WTF fun facts