If you are talking about the pet dogs such as bulldog or sheepdog they can never attack.
nothing - they are non-fighting familiers
No, no pets in runescape can attack, only summoning familiars that you spawn can attack back.
Usually you attack monsters in RuneScape by clicking on them. In some rare cases, you have to right-click and select the "Attack" option.
No.
Your attack stats don't but look at you Magic bonus on attack, that does.
By fighting.
Special attack.
You cant but you can attack it.
You attack the Old Man's bed by clicking on it.
Attack makes you hit more often and makes you wield weapons
Yes, you can teach your dog to attack.
without potions, 99.