"Animals Up Close With Bertie Gregory" premieres September 13 on Disney+. The Walt Disney Company is the parent company of National Geographic, Nat Geo Wild, Disney+ and this ABC station.

"Animals Up Close with Bertie Gregory," on NatGeo and Disney+, looks at the world's animals and focuses on co-existence.

The second installment of "Unlikely Animal Friends" will air Friday January 14 at 5 p.m. on the National Geographic channel. For more information, click here.

Conflicts between herders and the wild ancestors of their yaks, camels and reindeer are a serious threat to both people and wildlife, writes a scientist who has seen these clashes firsthand.