A student described his new pet dog to his friends. Which part of his description identifies an acquired trait of his new dog?

You did not enter the description of the dog, which does not allow me to tell you specifically which characteristic of the dog is acquired, but I can help you. This is because the characteristics acquired are those that are not hereditary, that is, a stain on the dog's ear or a bruise on its paw, for example, are a type of acquired characteristics.

Explanation:

As you may already know, hereditary characteristics are those that are passed from parents to children, through genetic factors. However, not all characteristics that living beings have are inherited. This is because there are the acquired characteristics, which are created by the environment over time and which are not passed on to descendants.

If your dog went to the pet shop and received a pink paint on his coat there, this is an acquired characteristic. The same is true if your dog has a bruised foot, or if there is a spot on its ear that is not related to the dog's genes.