Tasha is a minor character from the Stanley episode "Little Dog Lost." She only appears in part 2. She is Little Dude's mother, and along with him, she is the other pet of Mrs. Green. She is shown to have been worried about him, and she hugs him when Mrs. Green brings him down to her.
It is unknown who provided Tasha's barks or her singing voice, as she sings along at the Block Party.