I have 2 rabbit hunting house beagles.. mother/daughter. (domesticated hunting dogs) When we bred the mother, we couldn' t decide on keeping a pup or not. Needless to say,, we have 2 beagles now.. we started taking the little one out rabbit hunting with when she was 5 months old. She played at first, running back and forth between her mother and I, with some training, and not much,, she is the BEST rabbit dog around!!! She followed her mother around more as she got older and caught on to rabbit hunting very quick.
I don' t believe having 2 dogs is any more work than 1, unless you count opening and closing the door for nature calls.
If you get a pup,, try to introduce them and see how the pup interacts with your beagle before you commit.
Rusty & Sam (mom)