Two baby deer were born in the backyard of Darius Sasnauskas home near the Yellowstone National Park. One of these was having leg injuries and so abandoned by the mother. As there were many predators around, Darius brought it home and applied brace, made from an oatmeal box, to its broken leg and fed it. With his love and care the fawn recovered quickly but was not willing to leave him when he set her free. Ultimately its mother arrived one day and the family reunited and enjoying their life since then.
More info: youtube (h/t: thedodo, boredpanda)