Filling a niche separate from its green cousins, Deroplatys trigonodera, a leaf-litter mantid, has evolved the look of a leaf decomposing on the tropical forest floor.
A relative of jays and crows, nutcrackers hide pine seeds in theground each autumn so they have a source of food during the Colorado Rocky Mountain winter.
Okay, not quite like that, but sea sponges are a kind of organism still in existence today whose close relatives are a good candidate for early animals.