Knit garments aren't just for people; dogs appreciate a nicely-knitted sweater, too. Keep your dog warm during cool weather with a few simple directions for how to knit a dog sweater. Knit this sweater in two pieces and then add stitches for the collar and armholes, and your dog will weather the winter in style. You will need to be comfortable with basic knitting stitches, increasing, decreasing and knitting in the round in order to knit a dog sweater.
Knit the top piece. Cast on 44 stitches with size 9 needles and work in stockinet stitch (one row knit, one row purl) for approximately 8 inches, ending with a purl row.
Decrease the back portion of the top piece. Knit two stitches together on the first and last stitches of every knit row for a total of eight decreases.
Continue to knit in stockinet stitch until the top piece measures 12 inches from the beginning. Bind off and set aside.
Knit the bottom piece. Cast on nine stitches with size 8 needles and work in knit one, purl one ribbing for every row; make sure to knit the purled stitches and purl the knit stitches when you turn your work. This stitch pattern will give your bottom section enough stretch to help it fit over the dog's body.
Increase the first and last stitches of every third row for a total of seven increases. To do this, knit in the front and back of the first and last stitches of every row; if the first or last stitch is a purl stitch then you will purl in the front and back of the stitch.
Continue to knit in the knit one, purl one ribbing pattern until the bottom piece measures 8 inches from the starting point. Bind off.
Place the top and bottom pieces together with right sides facing, and sew the outside seams. Leave the bottom hem and neckline open, and leave a 2-inch opening on either side at the widest portion of the under panel. This will be the spot for the dog's legs to go through. Turn your work right-side out.
Use the double-pointed needles to pick up and knit 46 stitches around the opening in the neck. Join to work in the round and knit a knit one, purl one ribbing pattern for 3 inches, then bind off and weave in your loose ends.
Use the double pointed needles to pick up and knit 24 stitches around each leg opening. Knit the knit one, purl one ribbing for six rounds each, then bind off and weave in your ends.