1/ come back if called when chasing a cat, squirrel or rabbit?
Depends how early I called him, and what treats he knows I have on me. If he's near me and just starting to be alert to a fluffy thing then I can call him back and he'll come. If he's already started leaping through the undergrowth then I have less certainty. Also depends on whether it's just me and him, in which case he tends to stay closer and respond better, or whether we have my Mum's dogs, in which case he'll be off running around with them.
2/ Ignore a picnic laid out on the ground unexpectedly at the top of a hill you are walking up?
Are there people there? If there was food on the ground and no one with it then he'd tuck in, but I could probably call him away. It's not happened, and is not likely to happen due to where we walk, so am not 100% sure either way.
3/ leave tempting food left on the kitchen counter if there is no one else in the room?
He wouldn't go for anything on the counter. He's a bit smaller than a collie, and so counters are a bit too high. If I left something yummy on the coffee table and wasn't in the room he would probably help himself, but if I was there then he wouldn't.
4/ sit when asked to, when you don't have a treat?
Yup.
5/ wait for permission to eat their dinner if asked?
Yup, but then I ask him to wait whenever I put his food down, so it's part of his usual routine.
He is just over 2 years old, and is a crossbreed mongrel - 50% Samoyed, 50% mixed, probably mostly terrier types.