This just started recently and has progressively gotten worse. Background - I have five dogs - three altered females, one altered male and one unaltered male.

Carly (5 yr old altered mixed) became the alpha female when Peach died. She has learned to like the role and does it very well (gentle but stern). Max (8 yr old unaltered dachshund) has always been the alpha male (he's just cranky). Over the last week, I have Molly (18 mo altered old yorkie) (don't know any other word for it) humping Muffin (9 mo old altered dachshund) and the other way around. They've both been doing it to Kirby (15 mo old altered bichon) as has he to them. Now I have Max doing it to Kirby and Kirby doing it to Max. Carly is the only one who is not involved in the whole mess. It's ridiculous!

I sternly separate them and say NO directly to them over and over again. I've tried separating them. I know it's a dominance thing, but what do I do?