Radak

Gracious and compassionate: These are the attributes by which He expresses His goodness and righteousness. They shall utter and sing of Him, for He is gracious, granting favor to creatures and providing for their needs, and compassionate, showing mercy and pity towards them, protecting them from harm and the world's afflictions. Slow to anger: He delays His anger towards the wicked and does not punish them immediately. And of abundant love: The "dalet" with a "kamatz" and a "chet" with a "patach" imply that His love is abundant, enlarging His kindness towards human beings more than they deserve. [Adonai] is good to all. He is good and merciful even to wild animals, domesticated animals, and fowl. And so it is fitting for a person to follow these ways of His. One should not destroy life other than for a need or to guard oneself from dangers. So we find that our Holy Master (Rabbi Judah the Prince, editor of the Mishnah) bade his handmaiden not to sweep up mice with household embers. Rather, she should let them live in the cellar. He said to her, "It is written, 'His mercy is upon all His works.'"