That is it

In what way ?

From -- Health News - Goats & Cows Milk Compared

Summary of Differences
There are also differences that give goat milk a place for special purposes. In summary:

Goat milk has a more easily digestible fat and protein content than cow milk. The increased digestibility of protein is of importance to infant diets (both human and animal) as well as to invalid and convalescent diets. Goat milk tends to have a better buffering quality, which is good for the treatment of ulcers. Goat milk can successfully replace cow milk in diets of those who are allergic to cow milk. In under-developed countries, where meat consumption is low, goat milk is an important daily food source of protein, phosphate and calcium not available otherwise because of a lack of cow milk.

Here's a comparison: Goat Milk vs Cow Milk: A Comparison