I think dogs are great! I love how they're so wolf-like, are widely abundant and they make great pets!
I love dogs too. I hate cats.
Dogs can perform so many tasks for us humans. They can pull loads, hunt, herd animals, aid the handicapped and assist police and military.
I just like them as pets. They are so friendly and kind.
Yes, they are. I suspect that's due to millennia of breeding for various behaviors, sensory capabilities and physical attributes. Many of the negative attributes dogs used to posses have been bred out.
What negative attributes are those?
Their direct ancestor is believed to be extinct, but they are very closely related to the extant gray wolf. I'd assume the earliest breeds of dogs were quite viscous! 
Okay that makes sense. What else can you tell me about them?
Well, of course we all know that dogs are considered to be man's best friend, and it's not hard to see why! They fill such a huge role in our day to day lives.
When were they first domesticated?