>>56496995>>56496995>The ones we'd call pet Gardevoirs may weigh more, and may naturally have a bit more curve and fat to them, as well as being far more intelligent,This is actually something you can observe in many species, yes. Domestic and Pet animals tend to be larger than they would be if encountered out in the wild and they do display higher intelligence in testing. A gardevoir that's lived with people all its life would probably be very intelligent as there are dogs that somewhat grasp the concept of exchanging money for goods.
I couldn't say where the extra mass on their body would go though.