The law of karma only applies to living beings who have a human body. Those living beings who are in animal bodies are not under the law of karma.
Unfortunately, many people feel that it does not really matter how one lives their life, how one treats other people. The idea is that there are no repercussions or reactions to the actions that we take now. That soon it will be all over anyways. Or that one can trick life and get ahead by being a criminal, e.g., stealing something.
We have to understand that the law of karma is one of the material laws and will always work perfectly. Sometimes it may seem that a criminal gained a lot when he is not caught by the law enforcement in this world. But no one can escape from the law of karma. Sooner or later, it may even be in the next life time, a person has to pay the price for what they did.
The law of individual responsibility is that you are responsible, you are responsible for your activities now. And what you are experiencing now is due to what you were doing previously.