The show focuses on a virus found in rainwater that kills people on contact, but it's mentioned that the rain doesn't seem to effect animals. A deer appears early in season 1 but is not harmed, and 2 dead goldfish are briefly seen in a tank in flashbacks (season 1 episode 6). In the beginning of episode 6 two men from the group see a dog and one of them gets ready to shoot it, but doesn't. They throw a rock at the dog to scare him away and he whimpers but is not harmed otherwise. He is seen later wandering around in the rain, completely unaffected by it.
In the beginning of episode 6 two men from the group see a dog and one of them gets ready to shoot it, but doesn't. They throw a rock at the dog to scare him away and he whimpers but is not harmed otherwise. He is seen later wandering around in the rain, completely unaffected by it.