Question

If a mammal did not obtain enough iodine in its diet, you might expect ________.

Answer 1

The mammal is likely to suffer from goiter, that is, enlargement of the thyroid glands. 

Answer 2

Iodine, like all other minerals, is required in considerable quantity in the body. The function of iodine is that it is necessary for proper metabolic function in an animal.

The lack of iodine in a mammal will cripple the physical and metabolic functions and causes developmental delays in the mammal.