Look Who's Back
Adolf Hitler returns. He shoots a pet dog because it is annoying him.
The family's dog is shot and killed just off screen by the father. Other live animals that are briefly seen but come to no harm: a turtle, a lamb and a crab.
The main character ends up living in a Veterinarian clinic. There are kittens born and one seems to be in peril but ultimately is brought back to life. Lots of other animals are seen but nothing bad happens to any of them.
Nature documentary footage of animals is shown throughout the film; in one scene, a cheetah chases down, kills and carries off a gazelle.
Mad Max's family dog is eviscerated and hung from a tree.
Mad Max: Fury Road
This is a hard one to rate. No pets appear, but in the first minutes of the film a two-headed, CGI lizard is stomped on and then eaten while still wriggling. Later a CGI beetle is eaten alive as well.
In a comic scene, several cute animals are eaten: a hummig bird, a mouse and a duckling. We don't actually see the mouse being eaten but only being grabbed by an eagle that flies away carrying it. The other eatings are on-screen, the animals are swallowed whole.
Magic Christmas Tree
No harm comes to Lucifer the cat or Ichabod the tortoise. There is an odd sequence where the film cuts back and forth between shots of Ichabod eating grass and an approaching lawnmower, but the lawnmower ends up hitting a tree, not the tortoise.
A pet pig is not harmed, though it does eat some vomit.
One of the main characters is a raven that is also transformed into several other animals and creatures such as a wolf or a dragon, and also into a human. He is in peril throughout the movie, threatened and attacked, but survives unharmed.
Despite all the awful things happening to the family, their pet dachshund, Handsome, is completely unharmed. A tracking dog named Bird is seen briefly and doesn't end up hurt either. (A girl eats a moth.)
Man About Dog
A dog is shot (off screen) and another is run over. The film also contains hare coursing, where dogs chase live hares.
Man of Steel
Two dogs appear and neither are harmed. One dog survives a vehicle crashing through a house and In flashbacks a different dog is rescued from a tornado. (A flying alien creature is injured and makes a crash-landing.)
Manchester by the Sea
When a dog is barking, a person makes as though they are going to throw their shoe at it, but they do not.
It is mentioned that a cat and possibly a dog* were killed, but we're not counting it as they died before the movie began and we never see either alive or dead, except for a few brief shots of them when someone watches old home video footage. A live but sedated tiger is seen. (*At one point, someone says that the dog is at the vet because of a puncture wound; the wording makes it sound like the dog could still be alive.)
A cat's eye is ripped out (it looks obviously fake) and eaten by a disturbed man. The cat is later concreted into the wall along with a corpse, but is later discovered and gets out.
Man's Best Friend
A cat and pet parrot are eaten alive by a dangerous genetically altered dog. The dog is shot and dies.
Marley & Me
Dog is euthanized due to an incurable illness.
The president's dog is killed and a dog's head is removed and replaced with that of a human.