From the sharp mouthparts of mosquitoes to the sticky feet of geckos, researchers have found all kinds of amazing adaptations in the natural world that could be useful in the operating room.

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Leaving your stitches in too long can have some serious consequences.

Squeaks got hurt playing outside and had to get stitches! Jessi explains what happens at the doctor's office and how stitches help us heal!

Howcast - Learn how to do a single crochet stitch from Lion Brand Yarn's Andrea Lemire in this Howcast video.

Howcast - Learn how to crochet an afghan from Lion Brand Yarn's Andrea Lemire in this Howcast video.

Howcast - Learn how to crochet in the round from Lion Brand Yarn's Andrea Lemire in this Howcast video.

Howcast - Learn how to pick a crochet stitch from Lion Brand Yarn's Andrea Lemire in this Howcast video.

Howcast - Learn how to make a tie dye wave pattern in this Howcast video.

Howcast - Learn how to fix a dropped stitch in this knitting tutorial from Howcast.

Howcast - Learn how to knit in the round in this Howcast tutorial.

Howcast - Learn how to join to knit in the round in this Howcast tutorial.

Howcast - Learn how to do a cable stitch in this knitting tutorial from Howcast.

Howcast - Learn how to increase a stitch in this knitting tutorial from Howcast.

Howcast - Learn how to do a k2tog aka right-leaning decrease in this knitting tutorial from Howcast.

Howcast - Learn how to decrease in purling in this knitting tutorial from Howcast.

Howcast - Learn how to do a yarn over in this knitting tutorial from Howcast.

Howcast - Learn how to do a backwards loop cast-on in this knitting tutorial from Howcast.

Howcast - Learn how to do a long-tail cast-on in this knitting tutorial from Howcast.

Howcast - Learn how to do a basket weave stitch in this knitting tutorial from Howcast.

Howcast - Learn how to make a border in this knitting tutorial from Howcast.

Howcast - Learn how to do the basic stitches to knit a scarf in this Howcast tutorial.

Howcast - Learn how to do a linen stitch in this knitting tutorial from Howcast.

Howcast - Learn how to bind off in this knitting tutorial from Howcast.

Howcast - Learn how to use a blind hem foot attachment on a sewing machine from designer Jennifer Wiese in this Howcast tutorial.