Guest Appearance: Blue, Volume IV

Blue, despite what his name implies, is not actually a blue dog. In fact, that would be kind of silly. He possesses more of a grey coat of fur, and sometimes it can even be shiny.

He will also not appreciate it if you attempt to imply that he was named after, or has any relation to, the pooch in the once-popular children's television show Blue's Clues. Don't even mention it to Blue, or he might bite your shoelaces.

Guest Appearance: Blue, Volume III

Blue is not a boastful dog. He doesn't think he is the king of the world, even though it might look like it in this photo. Blue is playful, has a lot of personality, and gets along well in modern society. But he also retains some of the characteristics of his ancestors. He is a sheep dog at heart, and he likes to shepherd his herd. That includes protecting his herd from any threats, such as teenagers riding bikes, or people wearing certain types of shoes. He is a good shepherd.

Guest Appearance: Blue, Volume II

You might remember that Blue shares with Dave a great fondness for investigations, but Blue has at least one other thing in common with Dave. They share a propensity to be major goofballs with no warning. Blue takes a much less serious approach to life than Dave. He is not too embarrassed to roll around all over the floor, or run in circles in the backyard, or try to bite a stream of water coming from a hose. He just enjoys life. Perhaps this is because he has lived a more sheltered life than Dave has, but whatever the reason, Blue has a good time and isn't afraid to let you know about it. 

Guest Appearance: Blue

This is Blue. Blue is not a cat. He is a dog, although Ron Swanson may disagree. Blue lives with Fluffy, and has also never had the pleasure of meeting Dave. Blue has some things in common with Dave, although his napping skills do not compare favorably to Dave's. (In fairness to Blue, no one's napping skills compare favorably to Dave's.) In fact, Blue has much more in common with Jack than he does with Dave. Blue is very personable and excitable. But he has some things in common with Dave, principally their shared love for investigations. Blue never misses a chance to discover something new.