PORTLAND — As work continues on the Oregon Zoo’s expansive new Elephant Lands habitat, one thing is as clear as mud: Elephants — especially young elephants — love to wallow in the sticky stuff.

PORTLAND, Ore. — The Oregon Zoo has it in writing: Lily the elephant is here to stay. In an agreement finalized today, the zoo assumed legal ownership of Rose-Tu’s new calf from Have Trunk Will Travel, the California-based company that had previously held rights to the young elephant.