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.
There are very few minorities in this show. There are a handful of people of color, there are no out LGBTQ or trans characters, religion is not really mentioned, etc.
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.