Yosemite has a big plan for 2019. It includes traffic fixes — and mountain lion poop.

Dogs trained to smell mountain lion poop. Studying fungus on cliffs to protect bats. Reintroducing endangered bighorn sheep and frogs. Keeping old apple orchards alive in Yosemite Valley.

These are just a few of dozens of projects happening behind the scenes in Yosemite National Park.