An eight-week-old sea otter rescued from Seldovia, Alaska, peaks out of his enclosure at Shedd Aquarium Wednesday, December 6, 2023, in Chicago. The otter was found alone and malnourished and was taken to the Alaska SeaLife Center in Seward, Alaska, which contacted Shedd, and the Chicago aquarium was able to take the otter in. He will remain quarantined for a few months while he learns to groom and eat solid foods before being introduced to Shedd's five other sea otters. (Photo by Erin Hooley/AP Photo)

Some wave over the rainbow – a splash of colour is captured in spray over the sea wall at Totland Bay on the Isle of Wight off the south coast of England on February 16, 2022. (Photo by Jamie Russell/Bournemouth News)

“The pygmy hippopotamus (Choeropsis liberiensis or Hexaprotodon liberiensis) is a large mammal native to the forests and swamps of western Africa (the specific name liberiensis means “of Liberia”, as this is where the vast majority live). The pygmy hippo is reclusive and nocturnal. It is one of only two extant species in the Hippopotamidae family, the other being its much larger cousin the common hippopotamus”. – Wikipedia

Photo: Monifa, a one month old baby Pygmy Hippopotamus takes a morning bath at Taronga Zoo on November 7, 2008 in Sydney, Australia. Monifa is the first Pygmy Hippopotamus to be born at Taronga Zoo in the past twenty three years. (Photo by Sergio Dionisio/Getty Images)

An Orangutan named Elze walks in the Biopark of Rio during a media tour in Rio de Janeiro, Brazil, Thursday, March 18, 2021. The park was closed to the public for renovations to convert the city zoo into a center for biodiversity conservation and will reopen to the general public at the end of March. (Photo by Bruna Prado/AP Photo)

Female of pygmy hippopotamus called Malaya from Netherlands in zoo in Dvur Kralove nad Labem, Czech Republic, February 22, 2016. (Photo by David Tanecek/CTK via ZUMA Press)

In this January 7, 2016, photo, conservationists of Borneo Orangutan Survival Foundation hold a baby orangutan rescued along with its mother during a rescue and release operation for orangutans trapped in a swath of jungle in Sungai Mangkutub, Central Kalimantan, Indonesia. Last year's forest fires drove orangutans closer to the river bank, where they had to live in an over-populated swath of forest as thin as 30 meters wide along the river. (Photo by Dita Alangkara/AP Photo)

Radin the Sunda pangolin hitches a ride on Nita as their keeper looks on. The elusive and nocturnal Sunda pangolin produces only one or two offspring a year and Radin is the third pangolin baby born in Night Safari since 2011. (Photo by Wildlife Reserves Singapore)

The common brushtail possum (Trichosurus vulpecula, from the Greek for "furry tailed" and the Latin for "little fox", previously in the genus Phalangista) is a nocturnal, semi-arboreal marsupial of the family Phalangeridae, it is native to Australia, and the second largest of the possums.