Mikan♀

An abandoned anthropoid dog. Yuuichi finds her unconscious in the rain one night while walking home, unable to let her just die, he takes her up to his apartment and treats her. Even though he told her she can only stay until the rain ends, she stays in fear and worry. She was the pet dog of a girl called Misa, who recently died. She is initially very shy and detached, due to her being unable to accept the death of her master, and thus Yuuichi assumes that she lacks the proper ability to speak. She is eventually taken in by Yuuichi and, after some time, opens up and proves herself to be exceptionally intelligent.

[From Wikipedia]