Stills, Nash and Young. How could I have forgotten Crosby?

Nice mission, especially as my knee seems almost recovered. Mrs L wasn't sure if it was OK to get something for her new puppy, Crosby, as in the 1960 supergroup, so she'd not put chicken chews on the shopping list. At the check out, I realised I'd forgotten them, but when I got back to Mrs L, the disappointment was palpable, so back I went!