3 ms·
Happens all the time. Dogs. Cats. Birds. Occasional pigs. There have been specific scientific experiments as well, e.g., http://en.wikipedia.org/wiki/Washoe_(
by kbutler 13y ago
Happens all the time. Dogs. Cats. Birds. Occasional pigs.
There have been specific scientific experiments as well, e.g., http://en.wikipedia.org/wiki/Washoe_(chimpanzee) http://en.wikipedia.org/wiki/Washoe_(chimpanzee)