"intelligence" bumps are an old tale and are not true. If your dog has a knot on it's head, get that checked out. Lol
When you go to look for a breeder, look for one who shows their dogs and health tests (hips and eyes and elbows, hearts, patellas etc. as for OFA certs on the parents. If the breeder is unwilling to show you health test results, walk off. This breed is prone to spinal issues, since the ridge on their back is a deformity, and a breeder should breed for soundness.
Or go through a rescue. A lot of these dogs end up dumped because people get them then aren't equipped to handle them.