Rascal by Sterling North

In 1918 Wisconsin, 11-year-old Sterling North has an almost perfect life. He keeps skunks in the backyard, goes everywhere with his enormous Saint Bernard, and is building a canoe in the living room. The only trouble is life gets a little lonely for him and his father since his mother died. While scouting around the woods one afternoon, he discovers an abandoned, month-old raccoon. Afraid the kit will die on its own, he takes it home to join his menagerie. Soon Sterling and the mischievous raccoon Rascal are sharing one adventure after another, swimming, fishing, and camping. Theirs is an unforgettable friendship - until everything suddenly changes one warm spring day.