How should the concept of "hybrid vigor" be approached concerning Bulldog mixes?

Answer

With caution, as they are still susceptible to inheriting conformational problems from either parent.

While sometimes cited, hybrid vigor is not an absolute guarantee of superior health; Bulldog mixes remain vulnerable to inheriting genetic predispositions or conformational issues from both the Bulldog and the non-Bulldog parent.

How should the concept of "hybrid vigor" be approached concerning Bulldog mixes?
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