luckily, our Riley has never been one to beg, but if it's something he likes (turkey, steak, fish etc), I usually set aside a bit to cook without sauce etc for him. He doesn't get it until after we have finished, and is a very polite boy - he sits nicely and takes it gently. Skye is a moocher, which doesn't bother me too much - she will learn to wait. What I do object to is them trying to eat off your plate
She used to do this a lot more, but since being with us she is starting to learn that this behaviour means not only do you not get anything, but you will earn a full minute in time out
(of course, afterwards all is forgiven, and cuddles & playtime follows!
) ) in fact, she has only done so twice in the last 2 weeks. This is less because of time out than because Riley tells her off - he won't let her get away with anything he isn't allowed to do! When she is well behaved (like her big bro) she gets fussed and is given her share of the "cat portion"