See these happy baby animals in this week's best animal pictures

An unnamed polar bear cub is pictured on Feb. 10 at the Mulhouse zoo in France. The polar bear was born on Nov. 7, 2016.

Here's the cub with its mother, Sessi, on Feb. 10.

Hippopotamus calf Nimba bites its mother Liberia at the Fuengirola Bioparc near Malaga, Spain, on Feb. 8.

A titi pigmeo born 1 month ago hangs from its mother at Santa Fe zoo in Medellin, Colombia, on Feb. 8.

A 16-year-old Alaskan sea otter swims with a heart-shaped block of ice presented by his keeper at the Hakkeijima Sea Paradise amusement park in Yokohama, Tokyo, on Feb. 12. The event takes place once a day for park visitors until February 14, in celebration of Valentine's Day.

This photo shows a chimp in the largest Latin American chimpanzee sanctuary in Sorocaba, Brazil. More than 40 chimpanzees reportedly live in Sorocaba, a Brazilian city that has become a refuge for large primates that have suffered in captivity in zoos and circuses.

A monitor lizard crosses a walkway during the second round of the 2017 Maybank Malaysia Championship golf tournament at Saujana Golf and Country Club outside Kuala Lumpur on Feb. 10.

A loggerhead sea turtle seen in an aquarium at the German Oceanographic Museum in Stralsund, Germany, on Feb. 9. The museum has carried out a headcount of all the animals, and workers were able to report that it currently has a population of 839 vertebrates belonging to 180 different species.

A Eurasian eagle-owl is displayed at a shopping festival in Kuwait city on Feb. 10.