I have a 9 month old Great Dane that used to look just like Achilles, i've feed mine Eagle pack for probably 4-5 months then switched over to Precise Holistic adult giant breed. I did this when I found out that Eagle pack was actually bought out by one of the larger companies and they make it now. Precise is actually made by the woman who used to make Eagle pack. Plus its a lot more filling so you don't need to feed them as much as you normally would. My great dane is 105 lbs now and eats 5 cups a day, where with eagle pack I would have to feed her close to the 7 cup range now. So it last a bit longer. Precise is $58.99 for a 30 lb bag.