This Baby Deer Is the Size of a Hamster

The Java mouse deer (Tragulus javanicus) is among the smallest deer species in the world. Adults typically weigh between 2.2 and 4.1 pounds. Their natural habitat is the tropical rainforests of Southeast Asia.
This baby Java mouse deer lives at the Bioparc Fuengirola, a zoo in Spain. When these photos were taken a few days ago, he weighed just 3.5 ounces.

Here he is with his mother, who was born at the zoo in 2007. They're 2 of 43 of their species currently in zoos in Europe. His father came from a French zoo last year.