Vintage Wooden Dog Themed Nesting Dolls

Lightweight wood maybe something like bossa wood but I'm not sure. There are imperfections and things on these. The large one has two top layer cracks on the side which is shown in the pictures. Some other imperfections on the smaller ones which I also tried to show with the pictures. These are really cool but really difficult to get apart and put back together. Please view photos carefully as they help show condition of the item.