My dogs are smart. They understand lots like ‘Sit’, ‘Lay down’, ‘Stay’, ‘Time to crate’, ‘Are you hungry?’, ‘Do you want to go for a walk?’ (Even if you spell ‘w-a-l-k’, they understand), ‘Do you need to go outside?’, ‘Let’s take a nap’ and surprisingly ‘Let’s go upstairs…Jeopardy’s on’.