I have a 6 month old Boston Terrier and his stool has been concerning. It is orange colored, very small, and has a small amount of blood visible. He recently ate some dairy (milk and cheese). Is this something I should visit the vet about?

Was the orange color and blood only after the dairy? If it has been that way for a while, yes, go to the vet. Otherwise, avoid more dairy, and keep an eye on it. Cows' milk contains lactose which dog's can't digest.

See the sticky at the top of the dog forum. It has useful information to any new dog owner.