For knitters out there, here is a link to a VERY simple sweater that anyone who can knit a scarf with a simple knit stitch can master. It allows for variation/customization with more advanced stitches/techniques as well. My first one turned out OK, I made a few minor adjustments on my second attempt and from then on they have turned out better and better with each one I make.
I use size 9.5 knitting needles and 2 strands of the cheap red heart brand acrylic yarn. I follow this pattern except I lengthen the neck section to 25 rows to allow for the turtleneck.
WARNING: dogs who chew can quickly unravel a hand knitted sweater simply by chomping through a single thread! 
http://www.talkingtails.com/sweater.html
Here are a few examples…
Dude
Hot Rod
Great looking sweater..I like that..thanks for the link
Nice looking sweaters. Knowing Jaycee would not last more than maybe one hour.
Rita Jean
Nice looking sweaters!
Nice sweater! Yes my pet shredder named Buddy would…... well you know.
