Comment by pochamago

There's no rational reason to care about non-human lives at all. When we talk about pragmatic, secular ethics, we do so for the purpose of creating a stable and happy society. We know that by training other humans not to harm humans we reduce the likelihood that we will face hardship. There is no reason to include animals in this system other than that some people feel more sympathy for them. But animals can't engage in ethics with us, treating lab rats better will not make the rat species less likely to cause damage to us. Animal rights are a purely emotional impulse