Both the laminate and hardwood will scratch and gouge. With so many animals, I'm wondering why you are not considering tile. It is far more durable and is similarly priced to hardwood. If you have large dogs, I would definately steer clear of laminate for durability issues. I used to sell kitchens and have seen in upwards of 1,000 different kitchens. Laminate floors with pets is a bad combination. I've seen several kitchens where they had large dogs and the laminate floors were torn up beyond recognition. The wood grain in entry ways was no longer visible because the dogs tore it up so bad in one kitchen.
The people who mentioned above the price difference are right though. If I remember correctly, Pergo goes for around $8 a square foot installed and hardwood is around 30%+- more depending on the type of wood.
One more vote for hardwood over pergo. But if it were my house and I had five indoor dogs, cats, ferets, lions, tigers, elephants or whatever you had, I would certainly put tile into consideration.
Another thing, remember that hardwood will be more resiliant than pergo or tile. So if you have back problems and spent a lot of time standing in the kitchen the hardwood will be the best for you back. Oh yea, tile grout is a bitch to clean, but it beats having permanent scratches and gouges in either pergo or hardwood.
my .02 cents.