To create it, make sure you have all of this supplies:

• pallets;
• OBS panels;
• extruded polystyrene;
• nails;
• headless nails;
• screws;
• 2 mm / 0.07 inches flexible synthetic glass;
• wood impregnating agent;
• solar light 
• blue painting (choose the colour you prefer);
• glue (I used Vinavil);
• clips 

And all of this tools:

• jig saw;
• ruler;
• scissors;
• drill;
• table saw;
• sander / sanding paper;
• screwdriver;
• brush;
• clamp.

The first thing to do is to disassemble some pallets taking the boards from them.

Then I designed the kennel by choosing the dimensions and cutting off the walls and the entrance. Every single wall has its "double", because lately I will create a "sandwich": two panels of wood will embed pieces of extruded polystyrene.

I removed the bottom deckboards and then I used the same pallet to lift the kennel from the ground. The pallet itself was hidden by adding 4 further boards on the sides. On the pallet I positioned an OBS panel (that it's 10 cm for side longer than the pallet). Half of this OBS panel was covered with a frame made out of pieces of the first pallet I disassembled; then the space in the centre of the frame was filled with extruded polystyrene. On top of this frame another OBS panel was positioned. On top of it I started building the external walls, supported by pieces of the first pallet we disassembled.

I trim the edges of the blocks that support the pallet with an angle of 45 degrees to hide them under the side panels.

Panels of extruded polystyrene were cut down and added on the external wall, but on the interior side. The main purpose of adding extruded polystyrene is to thermally insulate the kennel. The idea of creating two frames on the backwall was also used before for the floor.

On the internal side of the kennel I added OBS panels: the internal walls.

Also the roof is made out of three layers, to make it thermally insulated. Like the walls, it is painted blue. Using two hinges on the roof, it was settled on the backwall. The roof has the possibility to be opened and closed. In fact, as it is shown in the photos two long pieces of wood keep it open: they can opportunely be rotated and hidden. On the other hand, two clips keep it closed and avoid its unwanted opening.

The shingles aren't cut in a regular way. From a parallelepiped of wood (taken from the pallet I firstly disassembled) with an oblique cut two shingles can be obtained. The shingles are fixed with headless nails.