I think, there is a stall available in the category. It is just a ready built one. I think they are located in somewhere like outside one. Just look for asterisk-Pets and find it. There are beds, etc for cats and dogs.
They should have help topics in game... Just look for a question mark option some where or look in the options its self. The help even has different sections for EPs.
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S3 simblr: http://simplysimming.tumblr.com/
S4 simblr: http://simlogic.tumblr.com/
So the lesson is dont look in the build section lol I was pulling my hair out :P