Lemon Laws In California

Hi,
My boyfriend recently purchased a miniature english bulldog from bulldogs on the beach in Hollywood Florida. We paid more than $2500 for our precious dog Rambo, the price of the dog and the amount it cost to fly him over to California from Florida. Our home was recently remodeled and we have no history of having a sick pet or even any other animals in our house, however Rambo has developed a really terrible case of generalized demodex. It was initially a localized demodex just on his forehead and we immediately took him to the vet. We were given antibiotics, Ivermectin and some eye drops, however it has not be really effective and now his demodex has spread all over his chest, all four legs and it’s beginning to affect his back.
Out of curiosity, I looked up bulldogs on the beach and found that there has been several complaints about the owner of the business. He owns a variety of breeding sites: NY bulldogs, Bulldogs NYC, Puppy Elite Kennel [now shut down] and many of the puppies sold have extremely bad health problems. In addition, they provide fake AKC paperwork and forge vet papers.
I’m so shocked and extremely upset. The vet told us that Rambo’s demodex was given to him by his mother or littermates and his generalized demodex is an indicator of a defect immune system. By the way he is now a little over 5 months so he’s still a baby. However, I was wondering is there any legal course of action i can take against the owner of this business? I understand the pet Lemon law can be used, but I don’t really understand any of these legal matters.
Any help or legal understanding would be really helpful for us.
I understand that miniature english bulldogs are not recognized as a breed and they are prone to more health problems and I’m not looking for negative answers pertaining to this fact. thank you