You have almost certainly not caused any ,ong temr problems feeding pedigree.
Before I knew much about feeding dogs, mine were fed on Iams, as I believed it to be very good and my girls breeder thought (Still thinks) it was the best dog food going. I have to admit, she did look pretty good on it, but her breath STUNK and her teeth were disgustingly filthy. I, like many others, thought this was pretty normal for a dog.
I am sure you're dog would do OK on Iams, and it is better than Pedigree, but there are, in my opinion, better foods on the market. The best, if you can afford it, being Orijen.
The reason I say it is 'best' is that it doesn't contain any cereals, just meat and fruit/veg. Dogs weren't evolved to eat or diggest cereals, and so cereals in dog food, some more than others, can cause some problems and allergies. Rice is the best of a bad lot really, where cereals are concerned, and because of this a lot of companies use it, and they might cite 'fibre' as the reason. However, it is little more than a cheap filler. Some companies use whatever cereals are cheapest at the time, so on the ingredients it simply says 'cereals' rather than being specific. Some companie sdo list the type of cereal, but as seperate ingredients so that they can list meat as the first (greatest) ingreident, when the product actually contains very little meat.
Also, some commercial foods contain as little as 4% meat. Look for a high meat content (although other than Orijen, 30% meat would be the maximun really. Orijen has 70% meat) and dogs should have around 70% -90% meat/bone in their diet. Also look for meat that is listed specifically as meat, and not 'meat meal'.
So, I guess the upshot is, look for meat as the first ingredient, and that a % of meat is mentioned, look for any cereal to be named, and preferrably rice, and look for as few additives as possible. That said,a lthough no commercial dog food is likely to kill your dog (at least, not directly!

) an dis not the mother of all evil, I would chose not to feed most.
You could look at raw/BARF feeding, but DO look into it thoroughyl, it is becoming th e'next big thing' and too many people go into it without the proper reasearch or knowledge, which is especially important with a pup.
Sorry, ask a question and get an essay!
