The scene where a dog in the pound is euthanized can be upsetting to those who care about animals or have recently lost a pet.
The two main characters are living in foster care and their foster parents are very negligent which can be triggering to those who grew up in foster care.
A scene when the dogs are being rounded up and taken away may be scary to younger viewers.
A sheep has red glowing eyes that might be frightening to some younger children. Many people and many scenes involve dog poo. The Pound scene may be frightening to children.