2014 competition name: catster contest
closes on: April 14
get the prizes: Five finalists will receive the Cardboard Lover's Combo.
One grand prize winner will receive the Cardboard Lover's Combo, Modern Wall-hanging Cardboard Cat Scratcher, a PetFusion Cat Scratcher Lounge, and a Kittyblock ... all courtesy of Hauspanther.
eligibility: open only to U.S. residents with shipping addresses within the United States.
To join: Build a cardboard castle for your cat and submit a photo in the comments section of the post on www.catster.com/the-scoop/cardboard-castles-boxes-contest-instagram-hauspanther-giveaways-cute-cat-pictures-photos and on Instagram. Post your photos with Disqus in the comments section or use #CatCardboardCastlesContest and tag @catstermag and @hauspanther on Instagram.