Formerly believed to be an idea in which animals should be equal to people, it is now widely recognized to be a belief where animals should receive higher consideration than humans.
Animal Rights means that humans are forbidden to hunt and/or eat animals, and are forbidden to use animals for ANY reason....
while animals are allowed to hunt and kill, as well as exploit other animals (ants exploiting aphids for their honeydew, for example).
Under this rule, animals are also allowed to kill a human for ANY reason (including, but not limited to: predator instinct, invasion of property, protection of young, etc.) while no human is allowed to kill an animal for any reason, not even to rescue his children from a bear attack.
When it comes to Animal Rights, George Orwell said it best in Animal Farm:
"All animals are equal but some are more equal than others."
The animal rights girl was against animal testing, so she killed a scientist. Meanwhile, she also let a serial killer run free, because he only killed humans...none of his targets were animals. Plus, he was a vegan!