Michael Durham / Coho Salmon (Oncorhynchus kisutch) eggs at ten weeks after spawning, Washington

Matthias Breiter / Mountain Lion (Puma concolor) in the snow, Kalispell, Montana

Michael Durham / Rainbow Trout (Oncorhynchus mykiss) pair underwater in Utah, a popular game fish native to coastal streams of the western US and introduced into the eastern US and worldwide

Michael Durham / Pacific Chorus Frog (Pseudacris regilla) jumping into pond, Oregon

Gerry Ellis / De Brazza's Monkey (Cercopithecus neglectus) portrait, captive animal, Woodland Park Zoo, Washington

Gerry Ellis / Chimpanzee (Pan troglodytes) teaching, young male to use fishing tool, Washington Park Zoo

Gerry Ellis / Jaguar (Panthera onca) portrait of young Jaguar, Woodland Park Zoo, Washington

Gerry Ellis / Jaguar (Panthera onca) fur, close-up of patterned detail, Washington Park Zoo, Portland, Oregon

Gerry Ellis / Chimpanzee (Pan troglodytes) uses fishing tool, Washington Park Zoo

Gerry Ellis / Chimpanzee (Pan troglodytes) uses fishing tool to feed on insects, Washington Park Zoo

Norbert Wu / Loggerhead Sea Turtle (Caretta caretta), 2-3 year old juvenile swimming, Florida

Norbert Wu / Florida Panther (Puma concolor coryi) portrait, close-up of head, Florida