My stepdad kicked my dog?

A little back story. I’m 26. I live at home to help my mom out by taking care of my disabled sister. This has caused me to not be able to have a full time job since my sister needs full time care. BUT, I do side jobs like I make homemade dog treats, I cut yards, housework, etc. I’m also a full time college student but I do all my classes online.

Anyway. I have a 1 year old Yorkie. Whenever someone starts running, she runs after them and starts barking and acts like she’s gonna bite your ankles but doesn’t. EVERYONE KNOWS THIS. So we do not run. But my youngest sister who is 10 years old still does this! She does this for attention! So she’ll run and my Yorkie will run after her and pretend to bite and my sister starts yelling at the top of her lungs. My stepdad saw this and KICKED my Yorkie and she flew and hit the couch. I grabbed her right away and yelled at him. And I wanted to call the cops but my mom didn’t let me. I live in her home and she pays the bills. So I feel like I’m at a loss here. Like she’d kick me and my dog out if I did call the cops.

What are my options here? My stepdad is also mean to me and my disabled sister. He’s verbally abusive and he told me to get out today after I yelled at him. I’m fine if I get kicked out because I have a car. But I’m worried about my sister. She’s disabled and can’t defend herself.
My stepdad kicked my dog?
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