unfortunately, many people have a fairy tale idea of what cross breeding will do- all to often you get the worst of both breeds. Pugs have breathing problems and eye problems, and often patellar problems. Beagles are prone to epilepsy and eye problems. Both have a tendency towards obesity, and beagles have that famous hound temperament- different priorities than us for training. In an ideal world you'd get only the good stuff from each side, in the real world too often you get the bad.
With "doodle" crosses, the mills never mention that since the hair doesn't shed like regular dogs, you, the owner, have to groom it and keep it groomed.
I have a whippet I've been planning to breed for years. I just haven't gotten to the point where I could keep the entire litter if necessary (if reservations backed out) and the responsibility of taking the pups back, regardless of age, at any time. It's a ton of responsibility to take on-
vickie