Niko the 2-year-old sloth bear just arrived at the National Zoo.

He was euthanized yesterday after suffering from a severe degenerative disc disease in his spine.

Then she took a nap.

Rona and Remi are their names.

Sloth bear Khali ate one cub 20 minutes after it was born on December 29 and another seven days later.

You might have problems with the weather, but that’s nothing compared to the epic challenge faced by the National Zoo’s sloth bear cub.

The National Zoo’s oldest sloth bear, Merlin (left), pictured here in 2008 with female sloth bear, Khali, passed away this morning. Photo Credit: Mehgan Murphy/Smithsonian’s National Zoo. Another sad death to report at the Smithsonian’s National Zoo. Merlin, the Zoo’s oldest male sloth bear, died this morning after a 48-hour illness, according to a news release. He was 28 years old.On Monday morning, Nov. 2, he underwent a routine physical examination. Although the examination…

It’s a double dose of adorable today from the National Zoo. As good DCist readers, you know that we’ve had two batches of baby animals to coo at lately: the giant anteater pup who has a thingee, and the pair of clouded leopard cubs (also with thingees). Today we’ve learned, via the Zoo’s Flickr stream, that our anteater pal has been named. Ladies and gentlemen, meet Cyrano. He’s gaining a pound a week, nursing and…