interbreed

They said that could lead to the wildcats breeding with feral domestic cats, with such interbreeding – also known as hybridisation - undermining the whole idea of bringing back the species.

The earlier timeline means that the three species of humans co-existed on the planet for around 800,000 years, much longer than previously thought, perhaps interacting and interbreeding in that time.

Barred owls and spotted owls are similar in appearance and can even interbreed.

Barred owls and spotted owls are similar in appearance and the birds can even interbreed.

"Over time we are going to have this entire lineage of cold adapted elephants that we can put back into the wild that can interbreed"