At 10 months, both of our dogs were getting just 2 cups a day. Before that was 3 cups a day. I'd say that 4-1/2 cups is too much unless the dog is underweight, but 60 pounds sounds just about right for a 10-month-old male.
It depends on the food.. each brand of food has a different number of calories in a cup. You really just need to look at the feeding guidelines on the bag of food, and use that as a good starting point, keeping in mind that the bag listed amount is usually on the HIGH side.
Like others have said it just depends. Can you still easily feel his ribs, but not see them? That is the ideal weight-feel the ribs, but not see them. You should also be able to see a nice tuck at the stomach.
Tysen was about 75 lbs at that age and getting 4 cups a day and it was a struggle to keep weight on him. Now, at 2 1/2, he is down to 3 cups a day.
As others mentioned, it varies by type of food, so use that as a starting point. Molson is almost 9 months old, 60 lbs and he is getting 2¼ cups per day now that he is on Adult food (Nature's Harvest Grain Free). When he was on puppy food, he was eating about 3½ cups a day.
Miles get 4c/day of Fromms classic adult. I've been trying to switch him to the 4 star line slowly but he keeps getting really soft stool from the switch. According the the feeding guideline on the bag, we're right on for his weight (he's 65 pounds): Classic Adult Dog Food - Daily Feeding Recommendations
I would go with everyone else and just say it varies, when chester was a pup he ate around 2-3 cups a day but now as a hyper 2 year old he gets 3 cups a day. he weighs 70lbs and the vet always compliments us on how great he looks.
My boy is 12 months old and I have been feeding him about 2.5 cups for a long time now. He is on his last bag of Pro Plan Large breed puppy formula. As soon as it is done, I will switch to an adult food and I might have to cut back to 2 cups depending on which food I will be feeding.
It really depends on the dog, the calories of the food and the activity level. At that age Hank was eating 4 cups/day. He was adding muscle and growing. He was also very active. He weighed around 70 lbs. at that age. He's now 5.5 yrs, weighs around 75 lbs. and eats 3 cups/day.
We have a 10 month golden (boy who is neutered), vet says to give him almost 5 cups, we are giving him 4 cups and he seems to be a little on the heavy side. Are there any issues if we cut the food back to 3 to 3.5 cups a day? he goes to daycare 4 days a week so he is very active. he is eating HP food since he is allergic to chicken.