is that possible to handle it onajax?

[NewNet]

I have on line form, which have file like animal ( cat, dog) .cat price, dog price , ...
afte submit , I store al this information in db
if I give an id number , then I get all the information relate to this id ,
I want to have a search form to select this information
in old way,
if I select cat One form my dropdown box , in order I get this cat's price, color ....
I have to submit .
I just wonder, If I use ajax, is that possible if I select cat one then all information relate to this cat just auto show up with click the submit button?