Hi Kim. Welcome to #steemit. Probably you have a lot of question about Steemit and the easiest way to get proper answer is from reading the https://steemit.com/faq.html

I'm a cat person too. My cat just came out from nowhere and live in my house like a hotel. He travelling often than me and came back once a while just to greet before his next journey.

The human verification with username is just an option. Meanwhile, main password is extremely important and remember to keep it in a safe place and do not lost it. If you lost it, you can never recover your account.

Have fun exploring and posting your experiences in Steemit. Enjoy!