Why is it every time I take my puppy out someone wants to buy him?

Every time I go out in public with my beagle puppy copper someone wants to buy him, people will walk up and say oh cute puppy are you going to sell him? I also have issues with my German Shepherd mix who I'm trying to be a service dog people ask oh she's smart are you planning to breed her? Like no I'm not I'm not selling my puppy and I'm not breeding my dog either