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Cat Birthday Party & Tree House
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New set
342
2025 Friends
LEGO ID: 42666

Cat Birthday Party & Tree House

Official names in other languages
English
Cat Birthday Party & Tree House
Português (Portugal)
Festa de Aniversário do Gato e Casa da Árvore
Español
Fiesta de Cumpleaños y Casa del Árbol Felina
Français
La fête d’anniversaire et l’arbre à chats
Deutsch
Katzengeburtstagsparty & Baumhaus
Italiano
Festa di compleanno felina e Casa sull’albero
Dansk
Katte-fødselsdagsfest og trætophus

The LEGO Cat Birthday Party & Tree House (42666) is a Friends set from 2025 with 342 parts. Compare prices across 111 regional LEGO stores and plan your build budget with BrickBudget.

Prices and availability

My store

Selection
Unavailable

Parts

342 parts • 0 unique
166 unique parts found
25x
Green Plant Plate, Round 1 x 1 with 3 Layered Leaves

Green Plant Plate, Round 1 x 1 with 3 Layered Leaves

ID: 32607
N/A
Yellowish Green
8x
LIMB ELEMENT, SMALL

LIMB ELEMENT, SMALL

ID: 6268818
N/A
Lime
6x
2M CROSS AXLE W. GROOVE

2M CROSS AXLE W. GROOVE

ID: 4142865
N/A
Red
6x
Brick, Round Tube 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole

Brick, Round Tube 1 x 1 d. 90 degrees Elbow Macaroni - No Stud - Type 2 - Axle Hole

ID: 25214
N/A
Tan
6x
CANDLE, NO. 1

CANDLE, NO. 1

ID: 6422088
N/A
Reddish Brown
6x
CROSS AXLE, EXTENSION, 2M

CROSS AXLE, EXTENSION, 2M

ID: 6262188
N/A
Tan
6x
FLAT TILE 1X1, ROUND NO. 56

FLAT TILE 1X1, ROUND NO. 56

ID: 6287856
N/A
Medium Nougat
6x
NOSE CONE SMALL 1X1

NOSE CONE SMALL 1X1

ID: 4529237
N/A
Tan
6x
PLANT, W/ 3.2 SHAFT, 1.5 HOLE, NO. 1

PLANT, W/ 3.2 SHAFT, 1.5 HOLE, NO. 1

ID: 6235080
N/A
Bright Green
5x
BRICK 1X1

BRICK 1X1

ID: 4619652
N/A
Medium Azure
5x
PLATE 1X2

PLATE 1X2

ID: 4570877
N/A
Dark Orange
5x
PLATE 2X2 W 1 KNOB

PLATE 2X2 W 1 KNOB

ID: 6126090
N/A
Medium Azure
4x
FLAT TILE 1X2

FLAT TILE 1X2

ID: 4649741
N/A
Medium Azure
4x
FLOWER 1X1

FLOWER 1X1

ID: 6206150
N/A
Bright Green
4x
HORN W. SHAFT Ø 3.2

HORN W. SHAFT Ø 3.2

ID: 6527826
N/A
Bright Green
4x
PLANT, W/ PLATE 1X1, NO. 1

PLANT, W/ PLATE 1X1, NO. 1

ID: 6182261
N/A
Bright Green
4x
PLATE 1X1 ROUND

PLATE 1X1 ROUND

ID: 4517996
N/A
Bright Pink
4x
PLATE 1X2 W. VERTICAL SCHAFT

PLATE 1X2 W. VERTICAL SCHAFT

ID: 6261357
N/A
Tan
4x
PLATE 2X4, W/ 2 KNOBS

PLATE 2X4, W/ 2 KNOBS

ID: 6293826
N/A
Bright Green
4x
PLATE ROUND W. 1 KNOB

PLATE ROUND W. 1 KNOB

ID: 6223767
N/A
Dark Pink
4x
SHAFT 2M DIA. 3.2 W/ STOP

SHAFT 2M DIA. 3.2 W/ STOP

ID: 6447501
N/A
Tan
3x
3-BRANCH CROSS AXLE W/CROSS H.

3-BRANCH CROSS AXLE W/CROSS H.

ID: 4502595
N/A
Light Bluish Gray
3x
BOX 2X2, BOTTOM, NO. 1

BOX 2X2, BOTTOM, NO. 1

ID: 6517936
N/A
Bright Pink
3x
BRICK 1X1

BRICK 1X1

ID: 6061685
N/A
Bright Light Orange
3x
BRICK 1X1

BRICK 1X1

ID: 6422915
N/A
Coral
3x
BRICK 1X2

BRICK 1X2

ID: 4579659
N/A
Dark Orange
3x
BRICK 1X2

BRICK 1X2

ID: 6003003
N/A
Bright Light Orange
3x
BRICK 1X2

BRICK 1X2

ID: 6258572
N/A
Coral
3x
FLAG W/ 2 HOLDERS

FLAG W/ 2 HOLDERS

ID: 6365487
N/A
White
3x
LEAF 4X5X1 2/3

LEAF 4X5X1 2/3

ID: 6522798
N/A
Lime
3x
PLATE 1X10

PLATE 1X10

ID: 6423273
N/A
Medium Azure
3x
PLATE 1X2 WITH SLIDE

PLATE 1X2 WITH SLIDE

ID: 4160483
N/A
Tan
3x
PLATE 2X2 ROUND

PLATE 2X2 ROUND

ID: 6498749
N/A
Bright Pink
3x
PLATE ROUND W. 1 KNOB

PLATE ROUND W. 1 KNOB

ID: 6380676
N/A
Bright Green
3x
PROFILE BRICK 1X2

PROFILE BRICK 1X2

ID: 4655900
N/A
Tan
3x
WALL ELEMENT, ROUND 2X4X4

WALL ELEMENT, ROUND 2X4X4

ID: 6232142
N/A
Tan
2x
ANGULAR BRICK 1X1

ANGULAR BRICK 1X1

ID: 6387434
N/A
Bright Light Blue
2x
Arch 1 x 2 Inverted

Arch 1 x 2 Inverted

ID: 78666
N/A
Coral
2x
BRICK 1X2, OUTSIDE HALF ARCH, NO. 1

BRICK 1X2, OUTSIDE HALF ARCH, NO. 1

ID: 6392166
N/A
Bright Light Orange
2x
BRICK 1X2, OUTSIDE HALF BOW

BRICK 1X2, OUTSIDE HALF BOW

ID: 6391523
N/A
Tan
2x
BRICK 1X3

BRICK 1X3

ID: 362201
N/A
White
2x
Brick 1x3x2 w. inside bow

Brick 1x3x2 w. inside bow

ID: 6357619
N/A
Medium Azure
2x
BRICK 1X4

BRICK 1X4

ID: 6036238
N/A
Medium Azure
2x
BRICK 2X2X2/3, INVERTED BOW

BRICK 2X2X2/3, INVERTED BOW

ID: 6336860
N/A
Bright Light Blue
2x
BRICK W. BOW 1X5X4

BRICK W. BOW 1X5X4

ID: 6075057
N/A
Tan
2x
Bright Pink Brick, Round 2 x 2 x 1 1/3 Dome Top with Cat Ears

Bright Pink Brick, Round 2 x 2 x 1 1/3 Dome Top with Cat Ears

ID: 5690
N/A
Bright Pink
2x
CROSS HOLES W/ DOUBLE, DIA. 3.2 SHAFT

CROSS HOLES W/ DOUBLE, DIA. 3.2 SHAFT

ID: 6459423
N/A
Reddish Brown
2x
FLAT TILE 1X1 - ROUND "NO. 8"

FLAT TILE 1X1 - ROUND "NO. 8"

ID: 6284599
N/A
White
2x
FLAT TILE 1X2

FLAT TILE 1X2

ID: 6213779
N/A
Dark Turquoise
2x
FLAT TILE 1X2, NO. 483

FLAT TILE 1X2, NO. 483

ID: 6527761
N/A
Light Aqua
2x
FLAT TILE 1X4

FLAT TILE 1X4

ID: 6195267
N/A
Bright Green
2x
FLAT TILE 2X2

FLAT TILE 2X2

ID: 4615728
N/A
Bright Pink
2x
FLAT TILE 2X3

FLAT TILE 2X3

ID: 6196596
N/A
Blue
2x
FLOWER 1X1

FLOWER 1X1

ID: 6426463
N/A
Bright Light Yellow
2x
FLOWER 1X1

FLOWER 1X1

ID: 6214235
N/A
Lavender
2x
FLOWER W. 1,5 CONNECTOR

FLOWER W. 1,5 CONNECTOR

ID: 6500671
N/A
Light Aqua
2x
HOLDER Ø3.2 W/TUBE Ø3.2 HOLE

HOLDER Ø3.2 W/TUBE Ø3.2 HOLE

ID: 6341465
N/A
White
2x
LEAF 4X5X1 2/3

LEAF 4X5X1 2/3

ID: 6507837
N/A
Bright Green
2x
LIGHT SWORD - BLADE

LIGHT SWORD - BLADE

ID: 6116602
N/A
White
2x
Pink Brick, Round 2 x 2 Dome Bottom

Pink Brick, Round 2 x 2 Dome Bottom

ID: 15395
N/A
Bright Pink
2x
PLANT, NO. 2

PLANT, NO. 2

ID: 6550818
N/A
Medium Lavender
2x
PLATE 1X2 W. VERTICAL SCHAFT

PLATE 1X2 W. VERTICAL SCHAFT

ID: 6261358
N/A
Green
2x
PLATE 1X2, ROUNDED, NO. 1

PLATE 1X2, ROUNDED, NO. 1

ID: 6536987
N/A
Bright Green
2x
PLATE 1X4

PLATE 1X4

ID: 6395814
N/A
Bright Green
2x
PLATE 2X2 ROUND

PLATE 2X2 ROUND

ID: 6109752
N/A
Medium Azure
2x
PLATE 2X4

PLATE 2X4

ID: 4158355
N/A
Orange
2x
PLATE 6X10

PLATE 6X10

ID: 6289699
N/A
Lime
2x
PLATE 6X6 W. BOW

PLATE 6X6 W. BOW

ID: 6093691
N/A
Blue
2x
PLATE ROUND W. 1 KNOB

PLATE ROUND W. 1 KNOB

ID: 6194417
N/A
Blue
2x
PLATE W. BOW 1X2X2/3

PLATE W. BOW 1X2X2/3

ID: 6460836
N/A
Bright Green
2x
ROOF TILE 1X1X2/3, ABS

ROOF TILE 1X1X2/3, ABS

ID: 6372124
N/A
Bright Light Blue
2x
SATELLITE DISH Ø16

SATELLITE DISH Ø16

ID: 4570283
N/A
Blue
2x
SHAFT 2M DIA. 3.2 W/ STOP

SHAFT 2M DIA. 3.2 W/ STOP

ID: 6451002
N/A
Reddish Brown
2x
STICK Ø 3.2 W/ HOLDER

STICK Ø 3.2 W/ HOLDER

ID: 6439053
N/A
Reddish Brown
2x
TILE 1X2, W/ 1/2 CIRCLE

TILE 1X2, W/ 1/2 CIRCLE

ID: 6445337
N/A
Medium Azure
2x
TILE 2X2, W/ BOW

TILE 2X2, W/ BOW

ID: 6250024
N/A
Coral
2x
WALL ELEMENT 1X2X3

WALL ELEMENT 1X2X3

ID: 4585448
N/A
White
1x
1X1 DECORATION TOP, NO. 2

1X1 DECORATION TOP, NO. 2

ID: 6438899
N/A
Reddish Brown
1x
1X1 DECORATION TOP, NO. 2

1X1 DECORATION TOP, NO. 2

ID: 6438899
N/A
Reddish Brown
1x
3.2 SHAFT W/3.2 HOLE

3.2 SHAFT W/3.2 HOLE

ID: 6476174
N/A
Reddish Brown
1x
ARCH 1X4X2

ARCH 1X4X2

ID: 6519696
N/A
Coral
1x
Bluish Gray Cat, Friends Style, Large, Sitting with Light Bluish Gray Fur, Auricles and Paws, Yellow

Bluish Gray Cat, Friends Style, Large, Sitting with Light Bluish Gray Fur, Auricles and Paws, Yellow

ID: 2652pb10
N/A
Dark Bluish Gray
1x
BOW NO. 1

BOW NO. 1

ID: 6023826
N/A
Lavender
1x
BOW NO. 1

BOW NO. 1

ID: 6023826
N/A
Lavender
1x
BOX 2X2, BOTTOM, NO. 1

BOX 2X2, BOTTOM, NO. 1

ID: 6439231
N/A
Bright Light Orange
1x
BRICK 1X1 W. 2 KNOBS

BRICK 1X1 W. 2 KNOBS

ID: 6531923
N/A
Blue
1x
BRICK 1X2 W/ 1 KNOB

BRICK 1X2 W/ 1 KNOB

ID: 6522315
N/A
Bright Light Blue
1x
BRICK 1X2X1 2/3 W/4 KNOBS

BRICK 1X2X1 2/3 W/4 KNOBS

ID: 6513765
N/A
Dark Turquoise
1x
BRICK 2X3

BRICK 2X3

ID: 6536259
N/A
Dark Orange
1x
BRICK 4X4 ROUND W. Ø4.9 W. KL.

BRICK 4X4 ROUND W. Ø4.9 W. KL.

ID: 6490950
N/A
Yellow
1x
BRICK W. BOW 1X4

BRICK W. BOW 1X4

ID: 6071607
N/A
Bright Light Orange
1x
BRICK W/ INSIDE BOW 1X6X2

BRICK W/ INSIDE BOW 1X6X2

ID: 6059179
N/A
Medium Azure
1x
CANDLE, NO. 1

CANDLE, NO. 1

ID: 6290456
N/A
Black
1x
CAP, W/ 1.5 SHAFT, NO. 1

CAP, W/ 1.5 SHAFT, NO. 1

ID: 6509777
N/A
Lime
1x
CAP, W/ 1.5 SHAFT, NO. 1

CAP, W/ 1.5 SHAFT, NO. 1

ID: 6509777
N/A
Lime
1x
Cat, Friends Style, Baby Kitten, Sitting with Black Eyes, Nose and Mouth, Bright Pink Tongue, White

Cat, Friends Style, Baby Kitten, Sitting with Black Eyes, Nose and Mouth, Bright Pink Tongue, White

ID: 69902pb07
N/A
Nougat
1x
CAT, NO. 51

CAT, NO. 51

ID: 6520273
N/A
White
1x
CAT, W/ 1.5 HOLE, NO. 34

CAT, W/ 1.5 HOLE, NO. 34

ID: 6520143
N/A
Medium Brown
1x
CAT, W/ 1.5 HOLE, NO. 35

CAT, W/ 1.5 HOLE, NO. 35

ID: 6520727
N/A
Black
1x
CONNECTOR PEG W. KNOB

CONNECTOR PEG W. KNOB

ID: 4211483
N/A
Light Bluish Gray
1x
CONNECTOR PEG W. KNOB

CONNECTOR PEG W. KNOB

ID: 4211483
N/A
Light Bluish Gray
1x
CUPBOARD 2X3X2

CUPBOARD 2X3X2

ID: 6313992
N/A
Blue
1x
DESIGN ELEMENT 1X1X1, NO. 1

DESIGN ELEMENT 1X1X1, NO. 1

ID: 6509764
N/A
Dark Pink
1x
DESIGN ELEMENT 1X1X1, NO. 1

DESIGN ELEMENT 1X1X1, NO. 1

ID: 6522800
N/A
Bright Light Yellow
1x
DESIGN PLATE 2X2X2/3, NO. 1

DESIGN PLATE 2X2X2/3, NO. 1

ID: 6330903
N/A
Tan
1x
DIADEM

DIADEM

ID: 6173109
N/A
Pearl Gold
1x
DIADEM

DIADEM

ID: 6173109
N/A
Pearl Gold
1x
FISH W. KNOB

FISH W. KNOB

ID: 6195347
N/A
Bright Light Blue
1x
FLAME, NO. 1

FLAME, NO. 1

ID: 6514274
N/A
Trans-Orange
1x
FLAME, NO. 1

FLAME, NO. 1

ID: 6514274
N/A
Trans-Orange
1x
FLAT TILE 1X1 - ROUND "NO. 8"

FLAT TILE 1X1 - ROUND "NO. 8"

ID: 6284599
N/A
White
1x
FLAT TILE 1X1, ROUND

FLAT TILE 1X1, ROUND

ID: 6514193
N/A
Trans-Yellow
1x
FLAT TILE 1X1, ROUND

FLAT TILE 1X1, ROUND

ID: 6514193
N/A
Trans-Yellow
1x
FLAT TILE 1X1, ROUND NO. 56

FLAT TILE 1X1, ROUND NO. 56

ID: 6287856
N/A
Medium Nougat
1x
FLAT TILE 2X2

FLAT TILE 2X2

ID: 6020147
N/A
Bright Light Orange
1x
FLOWER 1X1

FLOWER 1X1

ID: 6206150
N/A
Bright Green
1x
FLOWER 1X1

FLOWER 1X1

ID: 6426463
N/A
Bright Light Yellow
1x
FLOWER 1X1

FLOWER 1X1

ID: 6214235
N/A
Lavender
1x
FLOWER W. 1,5 CONNECTOR

FLOWER W. 1,5 CONNECTOR

ID: 6500671
N/A
Light Aqua
1x
FRAME 1X4X3

FRAME 1X4X3

ID: 4530590
N/A
White