Hmmm.... to be completely honest, kittens are best when adopted in pairs. They will keep each other entertained and they will be less apt to get into trouble.

There's really not much to look for when adopting a kitten because basically they are all sweet, all cuddle, all purr. You really don't know what their personalities are like tiol around 6 months old. If you know exactly what type of personality you want to fit into your family, then I'd suggest looking for a cat older than 6 months old. I'd look fora reputatble rescue where the volunteers can tell you details about a cat's personality and make sure he/she is the best fit for you.

When introducing the new kitty to your dog, do it slowly and do not leave them alone together until they've prooven ot be compatible and friendly at all times.

Congrats on wanting a cat!