Host Mulitple websites on Github

I’ve already used my github.io for my portfolio

but now i want to make a seperate website for something else… for example dog.com cat.com 

How do I go about doing that?

If you want to host a site with a custom domain, just add a CNAME file to you repo and configure the DNS.

If you want a GitHub domain, like (for example, burger.github.io), you’ll need to create an organization called “burger” and make a repo called burger.github.io.