Begin at the tail by casting on 2 sts. (Leave a long tail to simulate the mouse's real tail.) Increase in each stitch (knit into front and back of stitch). (this makes 4 stitches) Turn and continue increasing in each stitch until you have 32 stitches total.
Work 4 rows even, and then begin decreasing. Knit the first 2
stitches together at the beginning of every row until you have 6 stitches
remaining.
Bind off - leaving a very long end to sew the seam.
If you wish the ears to be the same color as his body, then thread your sew up needle with this tail of yarn. From the wrong side, insert this needle an inch from the end and work a large French knot (known as a barrel knot) for each ear. Wrap the yarn around your sewing needle at least 8 times.
If you wish eyes, take black yarn and mark 2 stitches for eyes, using
duplicate or cross stitch. With the wrong sides together, and using
same tail of yarn, seam the under belly of the mouse. Stop before
you are through, and stuff with catnip, bits of yarn, a bell, or any other
fill you
wish. Then continue seaming until done.
Now either twist, braid, or crochet the two strands of yarn for a tail. Tie an overhand knot at the end.
The most difficult thing about this pattern is to keep your cat away while you are knitting the mouse!