Every sign has its own peculiarity.
Never get into a fight with them
Aries is bad tempered, aggressive and impulsive. Plus, they are athletic and strong and may be violent.
Never steal their food
They will be happy to share it with you, especially if they made it themselves. But if you steal something from him, he will be very offended and will lose all respect for you.
Never tell him to shut up
For him, communication is the key thing, and if you tell him to shut up - that would be as if you cut off his hand.
Never criticize them
Cancers are a little insecure and every criticism, even those well-intentioned, is like a punch in the stomach for him. In fact, it would hurt less if you actually punched them.
Don’t try to surpass them
Leos like to be the center of attention, and if you try to take that away from them, they will hate you all their life.