Hi;
I'm an expert PHP programmer with deep WP knowledge. I coded very complex WP portals, including some ecommerce sites.
I have great interest in your project, as I love dogs and like to work on different kinds of sites. You need a frontend form with those fields, an ID generator and a modified search function, which is really not a though one for me. Since I worked on login/registration forms extensively, that wont be a big deal, too.
I do not ask upfront payments; you only pay for tested & approved code.
Please check my bio, testimonials and exams I took to show my skills.
Feel free to ask questions, and I'll happily answer them.
Best Regards