These are called Matryoshka Dolls, Nesting Dolls or Stacking Dolls. There are 3 figures of dolls in the nest. This doll has very rare kind of the painting. Each doll is richly decorated by round painting.
In work the artists used tempera with egg emulsion and fine polecat brushes. Very rich and bright paints are used. The dogs are painted so vividly that looks like alive. The dogs are painted very detailed and hundreds of individual brushstrokes make up the fur.
The tallest one is