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Keepers at the San Diego Zoo have been having a heavy time getting panda bear sonny boy Xiao Liwu to sit around still during his even checkups . But this week they obtain that , much like a tot , the fidgety bear calms down when he has a toy to play with .

" His favorite toy today was definitely the egg . He was really enjoying hugging it and wrap on it and doing those kind of rolly , tumble things thatpanda cubsare so notoriously cute for doing , " Beth Bicknese , a senior veterinary at the zoo , read in a video statement .

giant panda cub, cute baby animals

The San Diego Zoo’s panda cub, Xiao Liwu, did not want to share his plastic ball during his 18th exam.

" He ’s using his mouth right now kind of like a 5th hand , " Bicknese added , describe how Xiao Liwu is using his mouth to inquire different texture , from bamboo to the hands of his keepers .

Now 20 weeks old , the lesser panda consider in at 14.5 pound ( 6.5 kilograms ) and measure 29 in ( 73 cm ) from nose to dog during his exam Tuesday ( Dec. 18 ) , zoo official said . Keepers are waiting for the cub to become a better follower and substantial mounter before they put him out in a public panda exhibit .

Captive breeding is an important mode to study and conserve the menace mintage , as just 1,600 giant pandas are thought to be left in the wild . In gain to home ground loss from human action and low-pitched reproductive charge per unit , giant pandas ' survival is alsothreatened by climate change . A subject area released in the journal Nature Climate Change last calendar month found that global warming could wipe out much of the bear ' master food reservoir , bamboo , over the next century .

a panda munching on bamboo

A panda in the forest eats bamboo

A female polar bear and two cubs lie in the snow surrounded by scrubby plants.

two black bears lounge in a tree

A photograph of three baby western Santa Cruz Galápagos tortoises recently hatched at Philadelphia Zoo.

Screenshot from a video of a family of four snow leopards prowling through the snow in the mountains of northern Pakistan.

Tai Shan was born at 3:41 a.m. July 9, 2005, weighing only a few ounces at birth. The first cub for mother Mei Xiang (may-SHONG) and father Tian Tian (tee-YEN tee-YEN), he was conceived through artificial insemination March 11, 2005, in a procedure perfor

Tai Shan (tie-SHON) was born at 3:41 a.m. July 9, 2005, weighing only a few ounces at birth. The first cub for mother Mei Xiang (may-SHONG) and father Tian Tian (tee-YEN tee-YEN), he was conceived through artificial insemination March 11, 2005, in a proce

Giant pandas Mei Xiang and Tian Tian in 2008.

Twin panda cub brothers snuggle up at Zoo Atlanta, and now they have names: Mei Lun (may loon) and Mei Huan (may hwaan).

Panda Triplets

Panda snooze

An image comparing the relative sizes of our solar system�s known dwarf planets, including the newly discovered 2017 OF201

an illustration showing a large disk of material around a star

a person holds a GLP-1 injector

A man with light skin and dark hair and beard leans back in a wooden boat, rowing with oars into the sea

an MRI scan of a brain

A photograph of two of Colossal�s genetically engineered wolves as pups.

An illustration of a hand that transforms into a strand of DNA