This article was originally published on Critter Science.

The rock squirrel, 1 of the largest members of the family Sciuridae, is native to Mexico and the southwestern United States. These rodents are a common sight in and around the Grand Canyon. They face the threats of habitat loss and destruction at the hands of residential and commercial developments; […]

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This article was originally published on Critter Science.

The limpet is an aquatic snail with a powerful foot. They have a nervous system and a 3-chambered heart. There is also a ring of gills surrounding the edge of their shell. They even have 2 kidneys and an extensive digestive system. Limpets can be found in oceans all over […]

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