To make this great toy for your dog I used, 12 strings t-shirt yarn from about 1,2 yard long.
You devide the string in four parts from 3 strings and start the scoubidou technic, one I did with the round technic
and one with the straight technic
When you want to see the full explenation of the technic you can find it here.
In my Etsyshop and my own webshop www.lvly.nl I sell bundles t-shirt yarn from Hoooked Zpagetti, but if you only want 12 strings for your dogtoy, you can click here I made a special listing for the dogtoy strings:)
Our dog loves this toy. We also sell them and give our profits to the seeing eye dogs