In a post-apocalyptic world, a virus has transformed humans into violently deranged cannibals. A bereaved mother has lost everything and takes refuge in an isolated mountain cabin, until a desperate wounded stranger arrives with a story of hope.
There is no dogs physically in the film, however there is a brief mention of prior dog. When Noah & Otto are chatting in the cabin (shortly after Otto had found him on their couch & nearly shot him), Noah recalls how his son got infected after chasing their dog which had run off, & when Otto asks "You have a dog?", Noah responds "Had". No details are given, not even the dog's name. You could even choose to believe that they simply never found the dog again if that helps.
There's only one scene where food is involved (that I can recall), & Rory doesn't have the appetite to eat. I wouldn't necessarily her with an ED from this one instance though.