If you sew I would recommend making a generic bunting. You can keep it with just some fun fabric or even have it say happy birthday, that way you can use it over and over again. Also making tissue paper pompoms is easy and there are many tutorials online. They add a fun element to the party and are inexpensive. I would personally do most of the decor in a color scheme and then add in simple things to bring in the cats & dogs theme. For instance, I would use red, aqua, & navy for instance and use those colors for most of the decor, such as the tissue paper pom poms and table cloths. The add a simple fabric like a table runner with a cat & dog theme (paw prints) and add some stuffed cats and dogs to the mix.
Amber. Expecting #1 in January 2015. Married to a fireman. 2 fur babies - Golden Retriever & a chubby tabby cat.