How do you train your dog not to chase or bite people?

My dog is kinda a little on the rough side, I have a little sister who is five and whenever she is walking through the house my dogs chase her and jump on her and bite her ankles, My dog bit me in the thigh a few days ago and I want to know how you can train them to not be so aggresive.

How can i train my dog duke to not bite Dakota’s heels when he is angry?

He gets angry when he takes something he wants.

He is part GSD and he bites her back heels like a herd dog would would to a sheep.
I will absolutely not use anything like a shock collar.
I do watch that show but there’s never any cases like this. i also watch the Dog whisperer.

how can i train my dog not to bite my little dog so hard?

I adopted a four month old lab/pit mix and he gets along with my little 15 pound terrier but he’s like 25 pounds and likes to play a lot and so he starts to play with my terrier but sometimes bites her too hard I know because she lets out a cry… how can i teach him to play right?
i tried saying ouch or yelp but that makes him want to bite even more