Which of these animals is not extinct? Elephant shrew, desert bandicoot, Galapagos giant rat, or Steller's Sea Cow? The only one of these animals that's still on the scene is the elephant shrew.
Scientist thought the elephant shrew had been extinct for 50 years. Thankfully they were wrong. Why thankfully? Because it's cute. It's related to an elephant but tiny like a mouse. The last time scientist saw one was in the 1970s. But in the African nation of Djibouti where the elephant shrew was recently rediscovered, local residents had said they'd seen them.
These little mammals can run over 18 miles per hour, faster than some elephants. Maybe they didn't want to be found so they just eschewed scientists. It's not like you're going to see one in a trunk show. Unlike their thundering relatives, these animals are as quiet as a mouse and they're hard to catch even on camera because they're so shrewd.