What are my options for visa extension and traveling with my dog in Thailand?

Hello, everyone. I’ve been thoroughly researching this whole situation, and I still don’t know what’s the best option for me or where I should go to get everything taken care of.

My 60 days will be up in two weeks.

I’m traveling with my dog, and I know I’ll need to go to the vet and get a health certificate to leave the country again, which is already a headache.

I’m worried about not receiving her health certificate on time, and I obviously don’t want to get kicked out of the country. I was given incorrect information, and I wasn’t aware of the timeline.

These are my questions:

1. What happens if her health certificate arrives three weeks late and I’m here for more than 60 days? Will I get kicked out?

2. I have money in the bank, but I don’t want to pay any unnecessary money for this visa process. I’m considering going to Vietnam to apply for the visa and come back. Is this a good place to apply for the visa?

3. If Vietnam is a good place to apply for the visa, what kind of visa should I apply for?

4. How many times will I have to do these visa runs a year?

5. What documents should I bring to apply for my visa? Will I only need a printout of my bank statements, my passport, a printed photo of myself?