When we brought Aquila home, she weighed about 100 lbs. We gradually switched her from her old food (which had a lot of corn) to Nutro lamb and rice, then to the grain-free Orijen. The gentle transition took really well, and when I brought her to the vet for her pre-spay work-up a month after we brought her home, she weighed 120. she has maintained that weight, in spite of deviously devouring the entire contents of a five lb. bag (on three seperate occasions, no less). I can say that five lbs of Orijen in one sitting will produce the runs. :nono:
Orion has maintained his weight at 150, and being such a picky eater, he likes the Orijen. I buy in five lb bags for two reasons: one, I buy both regular and six fish and alternate them; and two, to keep Aquila from eating 35 lbs. Both look great. Aquila looks very fit, but I keep her fur trimmed short (to show off her girlish figure, of course) because he coat is so fine she's snarls like the dickens and hates being brushed. Orion's coat is very long, he's prefers the shaggy look, but loves to be brushed daily. Nessa's weight descriptions are excellent and very helpful, but if your newfie has a thick and long coat, it's hard to tell visually if he's too fat. Orion looks much bigger than he is, so I'd suggest checking how they look when wet. Then you can tell better.