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Evolution of cetaceans
The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, and remnants of their terrestrial origins can be found in the fact that they must breathe air from the surface; ... > more -
Polar Bear
The Polar Bear, aka white bear aka northern bear aka sea bear, is a large bear native to the Arctic. It is the largest land carnivore species and the apex predator within its range. It is ... > more -
Bighorn Sheep
Bighorn Sheep is a species of sheep in North America with two endangered subspecies, Desert Bighorn Sheep and California Bighorn Sheep. Bighorn Sheep are named for the large, curved horns borne by ... > more -
Whale song
Whale song is the sound made by whales to communicate. The word "song" is used in particular to describe the pattern of regular and predictable sounds made by some species of whales (notably the ... > more -
U.S. Navy Marine Mammal Program
The U.S. Navy Marine Mammal Program (NMMP) is a program administered by the U.S. Navy which studies the military use of marine mammals (principally Bottlenose Dolphins and California Sea Lions) and ... > more -
Hunting dog
A hunting dog refers to any dog who assists humans in hunting. There are several types of hunting dogs developed for the many tasks hunters require that they fulfill. The major categories of hunting ... > more -
Timeline of evolution
This timeline of the evolution of life outlines the major events in the development of life on the planet Earth. Dates given are estimates based on scientific evidence. In biology, evolution is the ... > more
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