Some dog food is sold as 'working' simply to avoid the vat. The food in question does two types of salmon feed one called finest and one called working. The difference ? nothing at all apart from one is cheaper due to exclusion of vat.

Retire a six year old whippet ? My lurcher is still working, although at a slower pace, at twelve years old. The whippets got years left in him. I generally let the dog decide when hes had enough.