Elephants have the longest known pregnancy of any animal, lasting up to 680 days. They are born with an advanced level of brain development.

Frogs can’t swallow with their eyes open.

Sea scallops  have about sixty eyes. They can be a bright blue color and help the scallop detect light, dark and motion.

Some baby whales are actually born with hair. Most species born with hair usually lose it over the first several weeks after birth.

Koalas have human-like fingerprints; in fact, they are almost identical to human ones. Not even careful analysis under a microscope easily distinguishes the loopy, whorled ridges on koala’s fingers from our own.