A 40 pd bag will last about 6 weeks.
It's,mostly,Priska who eats it!. She eats about 2 1/2 cups a day,depending on exercise.
As for Titus,he's,mainly,on raw diet with a cup of kibble,every couple of days!.
Fromm Salmon, 40# bag (yay for having friends who are friends with distributors), a little over one month.
2 dogs eating about 2 cups per day each
Bailey-43 pounds
Buzz-49 pounds