Poor girl - all that itching must be driving her distracted! Daisy's sister Raggle has allergies that get her biting her paws and scratching. This year she has been having a course of immunotherapy and it does seem to be helping!
Humping is usually one of two things - either a sexual thing, or a social thing. As she is humping objects it doesn't sound social - I wonder if it is a result of her recent season
Beamish is now 16 months - he has never humped objects, but he does hump dogs he has never met before - once he knows them he stops - very embarassing on walks

I think he is trying to say that he is not a pushover (but he is!

).