Doggy-talk doesn't always work on pooches. Doggone

When you speak to dogs, do you use a dog voice? You know, a dog voice - higher pitched, slower, maybe a little sing-song-y? The kind of voice you'd use when speaking to a baby, except... directed at a dog?

New research shows that puppies might actually react to that voice, though that's not the case with all dogs.

Researchers have found…