I don't think this is a FU, he is obviously mourning his loss, but you asking after it might have made for some awkward silence, but it also showed you noticed and gave you a chance to tell him you're sorry about his dog. no harm done

we gave my FIL a 13000 piece puzzle, he made it in sections and then at the end assembled all the sections on his office floor

don't worry about making them draw names again, it happens often enough if someone accidentally gets their own name :D

Please tell them before they buy the glasses, they are well expensive