Image Item No. Description  41017-1 (Inv)  Squirrel's Tree House 41 Parts, 2013 Catalog: Sets: Friends: Animals Series 1  41018-1 (Inv)  Cat's Playground 31 Parts, 2013 Catalog: Sets: Friends: Animals Series 1  41019-1 (Inv)  Turtle's Little Oasis 33 Parts, 2013 Catalog: Sets: Friends: Animals Series 1  41020-1 (Inv)  Hedgehog's Hideaway 34 Parts, 2013 Catalog: Sets: Friends: Animals Series 2  41021-1 (Inv)  Poodle's Little Palace 46 Parts, 2013 Catalog: Sets: Friends: Animals Series 2  41022-1 (Inv)  Bunny's Hutch 37 Parts, 2013 Catalog: Sets: Friends: Animals Series 2