Benefits and Issues: Just as a human being is in need of rest and comfort, in the same way, animals should also be cared for. For this reason, some scholars consider it recommended (mustahabb) that when a person stops at a place (on a journey), he should first feed his animal, and then eat himself. These teachings are evidence that Islam is a religion of nature (din al-fitrah) and a universal religion.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 2551