Wash the chicken fillet and champignons and dry on paper towels. Peel the onions and carrots. Hard-boil the eggs, cool in cold water, and peel. Cut the mushrooms into thin slices, onions and chicken fillet into small cubes. Grind the eggs using a medium-mesh grater, and the carrots with small ones. Save the whites of two eggs for decoration. Cut the olives into thin strips, set two pieces aside for decoration.
Fry mushrooms and chicken. In one pan, fry the mushrooms and onions in oil for 5-7 minutes. On the other - chicken for about the same amount of time. Cool the food, add salt and pepper.
Assemble the salad. Lubricate each layer with mayonnaise, except the top one. Place mushrooms and onions on the bottom of a flat plate, giving the salad the shape of a tiger's head. Distribute grated eggs on top, followed by chicken fillet and carrots.
Prepare the salad. Make a mouth from a tomato slice, and a nose from a piece of carrot. Make eyes from two olives. Distribute the grated whites of two eggs, creating a semblance of a muzzle, and place some of the whites around the eyes. Decorate with slices of olives, imitating stripes.
Before serving, place the Tiger salad in the refrigerator for 1 hour.