There's a dog in "Mold" that is seen barking outside the house. Since everything gets turned into mold, technically it's implied the dog did as well but it isn't shown or heard.
in "The Bully" a girl horribly bully's a young boy for reasons unknown, she later gets together with the kid when they're both adults and have a child together, which she also abuses
Episode titled "Tomb Town" has a dying cat that got hit by a car (you don't see it being hit) and it's discussed that it has to be left to die peacefully
(SPOILERS) Episode One: Spirit photography is talked about and later shown throughout the episode and at the very end the ghost of the siblings father chases them out to his grave.
Episode Two: Posessed dead bodies drag bodies down
Episode Three: Hot air balloon-esque heads of deceased characters float around
(SPOILERS) Episode One - Character pretends to be possessed with spirit of his father; Characters younger brother vomits up spirit of his father (may not be tried and true possession but could count)
Episode Two - Characters get swallowed by tunnel and then have their dead bodies possessed by spirits