The elephant brain weighs about 6,000g.
274
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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