Pets are closer to a slave than a child, they have no ability to ask or demand things of you and they get only what you choose to offer them. You can ignore every single need a pet has and just put them in a bag and carry them around like an inanimate object that can never protest your actions, and throw the bag in a river if you get tired of carrying it. You can have them killed or sell them or abandon them at your discretion. Children are only raised like this in the most unfortunate circumstances.