Answer:
The normal force acting on it is 127.4 N.
Step-by-step explanation:
Given that,
Mass of a dog = 13 kg
Normal force :
The supported force exerted upon a dog that is in contact with the surface it is called normal force.
Normal force is defined as:

Where,
F = normal force
m = mass of dog
g = acceleration due to gravity
Put the value of mass into the formula

Negative sign shows the upward direction of the normal force.
Hence, The normal force acting on it is 127.4 N.