What should I wear for my interview?

Me

I have an interview for what I’m assuming is a doggy day camp. It says that you can dress casual and that I’ll have to interact with the dog that will be there. I was thinking of wearing jeans or some of my nice leggings. I was just thinking of something that would be easy to move around in that will allow me to actually have contact with the animals but also something that will look professional as well.