Alligator eggs become male or female depending on the temperature, male in warmer temperatures and female in cooler temperatures.

Many whales are toothless. They use a plate of comb-like fibre called baleen to filter small crustaceans and other creatures from the water.

There is a company that will (for $14,000) take your ashes, compress them into a synthetic diamond to be set in jewelry for a loved one.

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