Why is my dog humping my other dog and trying to do the same with my cat.?

If #1 wants her sell her to him and tell this rude and overly entitled person that you never promised her the pup and because of her attitude you went ahead and sold the pup to the gentleman who knows what good manners are. If she doesn't like it that is her problem not yours. Some people, like me, like to meet the dog to make sure that we are a good fit, so it's hard to say "yes I want the puppy" without meeting them and seeing how they get along with you.

You're being a little unrealistic about it. If you expected me to give you an answer before meeting the pup, I'd wish you good luck but I can't answer you before meeting the pup so take it or leave it. Maybe "so many people have changed their minds" because you want a yes or no before they have a chance to meet the pup and they have figured out how much it will cost to keep the pup healthy.

Return the pup to the breeder instead of trying to make a fast buck off of them.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.