Gerry Ellis / Siamang (Hylobates syndactylus) portrait, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Snow Leopard (Uncia uncia), Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Solomon Island Leaf Frog (Ceratobatrachus guentheri), Woodland Park Zoo, Washington

Gerry Ellis / Western Lowland Gorilla (Gorilla gorilla gorilla) young male, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Jaguar (Panthera onca) panting, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Lion-tailed Macaque (Macaca silenus) pair sitting together on grass, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Western Lowland Gorilla (Gorilla gorilla gorilla) young male, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Bengal Tiger (Panthera tigris tigris) portrait, at Woodland Park Zoo, Seattle, Washington, native to India and southeast Asia

Gerry Ellis / Green Tree Python (Chondropython viridis) portrait, Woodland Park Zoo, native to Papua New Guinea

Gerry Ellis / Green Tree Python (Chondropython viridis) juvenile portrait, native to New Guinea, Woodland Park Zoo, Seattle, Washington

Gerry Ellis / Sun Bear (Helarctos malayanus) portrait, Woodland Park Zoo, Washington

Gerry Ellis / Snow Leopard (Uncia uncia) portrait, Woodland Park Zoo, Seattle, Washington