Tools and Materials:
1) Yarn:
Black (yarn A) and Red (yarn B) colors for the Halloween version, each approximately requires about 75meters
Red (yarn A) and white (yarn B) colors for the Christmas version, each approximately requires about 75meters
2) Crochet hook (size pls refer to the following table)
3) Needle, Scissors
4) Button
5) Iron Craft Wire
6) Stitch marker

Size:
S size: Use DK yarn, 4mm hook, neck circumference around 25-29cm, suitable for normal size of cat, small size of dog
M size: Use Aran yarn, 5mm hook, neck circumference around 30-34cm, suitable for medium to large size of cat, Medium size of dog
L size: Use Chunky yarn, 6.5mm hook, neck circumference around 36-42cm, large size of cat, medium and large size of dog