The Buffalo embroidery kit from Tall Sky Sewing is inspired by medieval manuscripts and bestiary illustrations. The embroidery kit includes everything you need to complete the design:
 
Suitable for: all levels (if you're worried about the more complex stitches, instructions for substitutions are included) 
Stitching Time: 30+ hours
Included in the standard kit: sample pattern to learn all stitches needed, design printed on linen, 2 tutorial videos, 6" wooden hoop, 2 needles, needle threader, skeins of DMC thread, cheatsheet and a tote bag. 
Why not add a custom made frame with a framing kit? Info here
 
[Buffalo] are similar to cattle, with shaggy necks and bristly manes. They run more swiftly than bulls. When captured, they cannot be tamed.
 
Gaius Julius Solinus [3rd century CE] (De mirabilibus mundi / Polyhistor, Chapter 20.4-5)