Max

The Carmen family:

This consists of Couple Mari Carmen, an unnamed husband, and daughter Jenifer Carmen, alongside a dog named Max. During the events of the first 3 films, max got infected by an apartment resident, and infected a vet as well into becoming a zombie. Max then infected Jenifer Carmen, but she mysteriously did not show signs of infection until later on, when Angela Vidal had suspected Max of having infected Jenifer. She was right of course, and she vomited blood onto Mari. Both Jenifer and Mari got infected, and when Jenifer's father tried to find them in Rec 2, he also got infected.