And if you've ever seen a picture of a dodo, you'd never think it was a dead-ringer for the familiar pigeon!
Scientists took tiny bits of DNA - the information that gives every living thing its characteristics - from a preserved dodo's skull.
When they compared it to different species of pigeons and doves, they discovered it was most similar to the Nicobar pigeon from south east Asia.
But the experts won't be doing a Jurassic Park with the dodo. They say it would be impossible to use the DNA to clone it and bring it back to life.
So it looks like it'll remain as dead as... you got it, a dodo!