Pablo and Penelope are matching Siberian cats, and they're both very vocal. The one who sounds like a baby dolphin is Penelope, though you can see some of Pablo's tail at the end of the video ...

A study published Monday found that bottlenose dolphin mothers use a kind of high-pitched baby talk with their calves.

Dolphin mothers vocalise to their calves—and it sounds a lot like baby talk.

Why people, dolphins or other creatures use baby talk isn’t certain, but scientists believe it may help offspring learn to pronounce novel sounds. Research dating back to the 1980s suggests that ...