TWO CATS PLUS THESE KITTY CONDO = TWO HAPPY CATS!  WELL BUILT AND STURDY CONSTRUCTION. EASY TO ASSEMBLE AND SET UP. NICE AND HEAVY, SO ITS NOT GOING TO TIP OVER WHILE THE CATS PLAY WITH THAT HANGING MOUSIE. ABSOLUTELY NO REGRETS WITH THIS PURCHASE! MY CATS ARE ALWAYS THERE, ON OR IN THE HOUSES. THE ONLY TIME THEY LEAVE THE CAT TREE, IS WHEN ITS TIME TO EAT OR TO DO THERE BUSINESS.