Is this fair? Getting another dog?

I'm in a family of eight aswell! we have 4 cats and i want a dog but apparently i cant have one cause of my cats -__- maybe your dad doesnt want the responsibility of it when you've left home (if you plan on going university or something?) but if you've had 3 dogs previously then im sure you can cope with it, you sound the responsible type:) Research how to train it (if you dont already know) then tell him you know and maybe he'll reconcider and stuff! Hope this helps! Good luck!