I thought most dog owners already knew their dogs understood what they were saying... From My Way News:
As many a dog owner will attest, our furry friends are listening. Now, for the doubters, there is scientific proof they understand much of what they hear.German researchers have found a border collie named Rico who understands more than 200 words and can learn new ones as quickly as many children.
Patti Strand, an American Kennel Club board member, called the report "good news for those of us who talk to our dogs."
"Like parents of toddlers, we learned long ago the importance of spelling key words like bath, pill or vet when speaking in front of our dogs," Strand said. "Thanks to the researchers who've proven that people who talk to their dogs are cutting-edge communicators, not just a bunch of eccentrics."
The researchers found that Rico knows the names of dozens of play toys and can find the one called for by his owner. That is a vocabulary size about the same as apes, dolphins and parrots trained to understand words, the researchers say.