Oregon Zoo baby elephant Tula-Tu has first outdoor adventure with mom

Sea otter slam dunks basketball at Oregon Zoo

Oregon Zoo's baby elephant Tula-Tu learns how to swim

Maple the beaver at Oregon Zoo celebrates 9th birthday

Baby elephant at Oregon Zoo turning 1 month old

Orangutan cuddles with her newborn at the Oregon Zoo

Oregon Zoo reveals gender of new baby elephant

River otters crunch on ice at Oregon Zoo

Oregon Zoo adopts 3 new tiny goats

Elephants squash some huge pumpkins at the Oregon Zoo

Polar bear sisters meet for the first time at the Oregon Zoo

Oregon Zoo bears come out to play

Oregon Zoo's dream team of sea otters going for gold | Drew at the Zoo

Elephant plays with giant log in pool at Oregon Zoo

Squish that squash! Oregon Zoo holds annual 'Squishing of the Squash' for the elephants

Oregon Zoo's baby elephant Tula-Tu enjoys first time out in the sunshine

OSU helps out to treat Oregon Zoo tiger

Oregon Zoo cheetah Strike dead at 15

Oregon Zoo lions turn camera into toy

Meet the 2 pregnant pachyderms at the Oregon Zoo

Oregon Zoo animals having a gourd time this Halloween season

Celebrating an orangutan mom for Mother's Day at the Oregon Zoo

Oregon Zoo's baby elephant Tula-Tu turns 6 months old

Oregon Zoo's new tigers explore their habitat

Oregon Zoo looks to Portlanders for improvement bond

Polar bear snacks on watermelon at Oregon Zoo

Oregon Zoo prepares for polar bear exchange this fall

Polar bear sisters Nora and Amelia Gray play in tub of ice

Oregon Zoo elephants squash giant pumpkins

New Humboldt penguin chick hatches at Oregon Zoo

Oregon Zoo welcomes tiny rescued opossum

Oregon Zoo partners with Wine by Joe to celebrate baby orangutan's birthday

Oregon Zoo welcomes a new baby elephant

How lab workers learn about animals at the Oregon Zoo through their waste

Meet Tamu, the Oregon Zoo's new baby rhino | Drew at the Zoo

With avian flu spreading, Oregon Zoo and Clark County Fair keep many birds out of sight