Rat Dissection (free pattern)

Allo! Amiguruthi is back! And with a disgusting but cute pattern for this little lab experiment:

Lab Rat (3)

I actually made this one back in August, when my sister requested him as a birthday present after she saw aKNITomy’s fabulous knitted version on Etsy. Then I got busy and promptly forgot to post his pattern. He came back to my memory thanks to my recent activity in a little show I wrote, directed and (due to last minute actor illness) performed in called ‘The Pied Piper’. For the last four months I’ve been off doing this show as a panto. For those non-UK readers, pantomime (commonly shortened to panto) is a children’s show with a dose of adult jokes, based on fairy tales and featuring large doses of slapstick humour. They’re generally performed around Christmas time, although since my group is amateur we push it back to February to avoid clashing with the big boys. It’s the first thing I’ve ever written or directed for stage and I could wax lyrical about how proud I am of it all, but this here blog is about crochet and you’re all here to learn how to make rat guts. So without any further ado, follow the pattern link after the jump.

The Essentials:

Hook: 3.5mm (E)

WoolWhite (or whatever colour your rat will be), peach, little bit of pink or black for eyes.

Also needed: Small scraps of felt in a variety of colours (not important what really, but to keep sort of close to authenticity I used red, blue, green, yellow, purple, black and peach)

Finished Size: approx 3” tall.

Terms (US terminology):

CH = Chain

SC = Single Crochet

INC = Increase

DEC = Decrease

BLO = Back Loops Only

SL ST = Slip Stitch

FO = Finish Off


Magic ring in white/ fur colour

Round 1: 6sc into centre of the magic ring [6]
Round 2: INC around [12]
Round 3-5: Sc around [12]
Round 6: {1sc, INC} repeat around [18]
Round 7: {2sc, INC} repeat around [24]
Round 8-9: Sc around [24]
Round 10: {2sc, DEC} repeat around [18]
Round 11: {sc, DEC} repeat around [12]

Stuff firmly

Round 12: DEC around [6]

You’ll end up with this:

Disected Rat (1)

Leave a long tail for sewing, and run it through the the side, coming out between rounds 8 and 9, rather than the back of the head.

Disected Rat (2)


Magic ring in white/ fur colour

Round 1: 6sc into centre of the magic ring [6]
Round 2: INC around [12]
Round 3: {1sc, INC} repeat around [18]
Round 4: {2sc, INC} repeat around [24]
Round 5: Sc around BLO [24] Turns the work flat
Round 6: Sc around (both loops from here on out) [24]
Round 7: {2sc, DEC} repeat around [18]
Round 8: {sc, DEC} repeat around [12]

Stuff firmly

Round 9: DEC around [6]

You end up with a half sphere. Again, leave a long tail for sewing brought out to the side, through round 5.

Disected Rat (3) Disected Rat (4)


The body is just a flap of peeled back skin (I have to write some gross things on this post, be warned!) so it’s really simple to crochet.

In white/ fur colour, Ch 21.

Row 1-7: Sc 20, Ch1 and turn.
Row 8: Sc 20, FO and weave in the ends.

Mine is pinned down for clarity. You can block this piece if you wish.

Mine is pinned down for clarity. You can block this piece if you wish.

A bit of body construction now. Attach the head at the top on one long edge of the body, leaving five stitches either side and connecting through ten (I hope that makes sense! Basically there’ll be five stitches of free material, then ten connected to the head, then five hanging free again at the other side).

Disected Rat (7)

Repeat this same pattern with the bottom.

Disected Rat (8)

Hips and back legs (make 2)

Leaving a long tail for sewing at the start, magic ring in white/ fur colour

Round 1: 6sc into centre of the magic ring [6]
Round 2: {1sc, INC} around [9]
Round 3-4: Sc around [9]

Colour change to peach

Round 5: {1sc, DEC} around [6]

SL ST across the circle to close the gap.

Disected Rat (9)

Ch 4

Row 1: Sc 3

SL ST to join leg to hip, FO leaving a long tail for sewing up holes left after round 5.

Disected Rat (10)

It looks a little like a chicken drum stick. Kind of. I hope those instructions make sense!

Use the initial white/ fur coloured tail to sew them to the body, where the back flap and the bottom meet.

Disected Rat (11) Disected Rat (12)


In peach, Ch5

Row 1: Sc 4

FO leaving a long tail for sewing.

Disected Rat (13)

Sew to the back flap a stitch away from the head.

Disected Rat (14)


Magic ring in peach

Round 1: 6sc into centre of the magic ring [6]

FO leaving a long tail for sewing.

Disected Rat (15)

Sew in place on either side of the head.

Disected Rat (16)


Use a little peach yarn to embroider a nose, and a little pink yarn to embroider the eyes (use black yarn if your rat is not white).

Disected Rat (17)


The fun part! Using your scraps of felt, create your ratty innards. You have a choice here – you can either go to town and really look into what would go where were this an actual rat, or you can wing it like I did. Very basically speaking, you need:

– lungs (peach in my piece)
– a heart (red in my piece)
– a stomach (purple in my piece)
– intestines (red in my piece with stitched detail)

And this is where my knowledge of anatomy dies a death, so I also chucked on two random shapes (the green and yellow bits in my piece) either side of the heart which could totally be liver and kidneys or just random squishyness, and a blob of black to stop it looking unnaturally symmetrical.

Disected Rat (18)

The blue you can see is a back piece I sewed everything on to. Go nuts, make it look like guts is the important thing here!

Sew it in place between your head and bottom. You want to curve the felt slightly and add a little stuffing below to give a 3D effect.

Disected Rat (19) Disected Rat (20)


In peach, Ch 15, FO leaving a long tail for sewing. Stitch in place on the bottom.

Disected Rat (21)

And there’s your dissected rat in all his glory.

Pin him down using dress making pins to some backing and display as you like. I haven’t actually seen how my sister is displaying hers, so I’ll have to find out what she did with him (when I gave it her, I used some paper folded in half and stuffed with a bit of toy stuffing, then placed the whole thing into a clean plastic take away box – unfortunately I didn’t think to photograph him in that state!). She was talking about putting him in a deep frame which would look really cool. If you make one and come up with a cool way to display him, please do send me photo via the Amiguruthi Facebook page.

Lab Rat (2)

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