did elvis and selena fight?
why would your dogface need to defend himself..?
it seems that puffers defend by pufing/part puffing rather than biting... but i'm no expert.
You could always try it, and see how it works out, with the understanding from the shop that if you come across problems you could return him....
if he remains toothless, at least you'd know what to do, some one else might not have the time/patience/love of puffers to make it work..
1 x 90G Juv stars and stripes puffer, Ceylon Puffer + GSP + 2 black clowns
1 x 30G LPS Reef
1 x 30G 1 x Blind goldfish
give the little darling a try, itll be better than if someone else who had no experience with puffers and no time took him and the poor guy suffered and died 
