This is what I do

A smear of marmite or peanut butter around the inside - they spend a good 20mins licking every little bit out

I nearly always freeze the kongs to make them last longer (and it's good when they're teething)

A mix of dry and wet dog food packed in really tightly
A mix of probiotic youghurt and dry dog food (sometimes with a bit of chopped raw carrot as well)
Left over roast dinner - Just the meat and veg (no trimmings)

Anything really thats dog friendly, chicken, ham cheese etc

Just watch the calories and take it out their daily food allowance


mine also like the treat balls they roll around and the dry food drops out as they do this - I just but their dinner in those

__________________


A dog Possesses Beauty without Vanity,Strength without Insolence, Courage without Ferocity, And all the Virtues of Man without his Vices.