Hi :) I was just wondering how many tins of dog food should my dog be on a day with or without Biscuits so if i could i have both calculations Pls I have a Staffordshire Bull Terrior who is 13 weeks old  i know some dogs eat more than others but was just looking for a rough guideline if anyone could help just making sure my dog not being starved lol but seems very active and happy and a nice Puppy Coat and good teeth at the moment. Many Thanks

Dont Do To Others That You Wouldnt Want Done To You !! :)

Can you not go back to your breeder for guidance?
If not, then I would be giving him 3 meals per day at this age and I would phase out the tinned stuff!
Buy a good quality puppy food, (Arden Grange, James Well Beloved, etc) and mix with the tinned, gradually lessening the tinned, until after a week or so he is only on the dry.
The food may seem expensive but if you work out what you spend on tins, it's not really.
I'm sure you will notice the benefits, less poo and less smelly!
Oh there will be a feeding guide on the bag, these tend to be over generous, so give a bit less than it says, if he puts on weight, cut down, and vice versa. Hope this helps.
Sorry for being so long winded!