First film in the Resident Evil live action film franchise.
When a virus leaks from a top-secret facility, turning all resident researchers into ravenous zombies and their lab animals into mutated hounds from hell, the government sends in an elite military task force to contain the outbreak.
A number of Dobermans are seen. Later on, they turn up zombies, missing all their skin and chunks of tissue. They attack humans and are killed (shot, kicked...) in self-defense.
Heads don't fare well in this movie. One is sliced into pieces, others are severed, some are shot, some are beaten, some are smashed, some are missing chunks...
All but two characters die by the end, and those two are kidnapped and separated at the end. A character later discovers that the city they lived in has been taken over by zombies, and that closes out the film.