A handful of endangered lizards with bodies nearly entirely comprised of their tails were born at a zoo in the U.K. recently.
Four blue tree monitor lizards were born while Bristol Zoo was closed due to the coronavirus pandemic, British news agency SWNS reports. The zoo has since reopened. Zookeepers have been caring for the endangered reptile species, which was only discovered in 2001.
"This is our second breeding success with the species and it is very important because we are trying to ensure a healthy population is maintained in European zoos," senior zookeeper Adam Davis said.
At birth, the blue tree monitor lizards were just 5 centimeters ( about 2 inches) in length and weighed just 13 grams (half an ounce).
When fully grown, they reach 27 centimeters (10.6 inches) in length, with two-thirds of that in their tail.
In addition, a pancake tortoise was also born during the lockdown, the zoo added.
Pancake tortoises are considered "vulnerable" due in large part to habitat loss and being sold for pets on the international markets, according to the Smithsonian National Zoo and Conservation Biology.