We have an older dog, (10 years). Will it be OK to leave him with our puppy when we aren’t home?

Absolutely not. If a pup is left to grow up with another dog it will look at other dogs as companions and not people. Pups should be kept separated from older dogs unless the owner is present to supervise. It is OK to take them out together when you are with them (for walks and play) but they should be in separate crates or kennels when alone.

In addition, older dogs tend to try and dominate puppies. This is not the atmosphere we want our future family protector to grow up in.