They're always adorable.
A dog wearing a pullover walks in a street of Strasbourg on February 7, 2012, as sub-freezing winter weather temperatures hit Europe.
A panda cub plays at the China Wolong Giant Panda Research Center in southwest China's Sichuan province on February 10, 2007.
Two-year-old chimpanzee Do Do feeds milk to Aorn, a 60-day-old tiger cub, at Samut Prakan Crocodile Farm and Zoo in Samut Prakan province on the outskirts of Bangkok, July 30, 2011.
Zoe, a domestic shorthair cat, touches the mouse of a computer during a media preview for The Cat Fanciers' Association 5th Annual CFA-Iams Cat Championship in New York on October 10, 2007.
Sara the walrus and her Russian trainer Sergiy perform during a show at Dolphinarium in Istanbul on December 4, 2008.
A dog catches a wave during the Surf City Surf Dog contest in Huntington Beach on September 30, 2012.
Ana Julia Torres kisses Jupiter, a lion that was rescued from a circus ten years ago, in California on April 18, 2009. Torres is a teacher whom for the last 16 years has been adopting and helping injured animals.
Five, an African elephant, holds a paintbrush as it paints a picture of Lottie and Adam Smith (not pictured) at West Midlands Safari Park in Bewdley, central England on April 7, 2009.
A meerkat warms itself under the glow of a heat lamp in its enclosure at Taronga Zoo in Sydney on July 3, 2003.
A Hamadryas baboon eats ice cream on a hot day at a zoo in Wenling, Zhejiang province on July 6, 2008