I mean seriously, how can you not love those eyes?
In case you have any little monsters that you would like to make this hat for, here's the dino spike pattern. You can add it to the top of any hat really, but I mostly use this pattern from Inner Hooker. The pattern below is just for the spikes on top.
Hook: 5mm (H)
Yarn: Any worsted weight is fine - I used Wool-Ease.
Mark the first stitch in each round. You're crocheting in a spiral, so don't join your rounds.
Round 1: Make a magic loop/ring, and do 6 single crochets in the loop. Pull tight. (6 sc)
Round 2: Single crochet around (6 sc)
Round 3: 2 single crochet in first stitch, 1 sc in next stitch - repeat around (9 sc)
Round 4: Single crochet in each stitch (9 sc)
Round 5: 2 single crochet in first stitch, 1 sc in next stitch - repeat around (14 sc)
Round 6: Single crochet around (14 sc)
Round 7: Single crochet around (14 sc)
Round 8: Single crochet in 1st and 2nd stitches, 2 single crochet in third - repeat around (18 sc)
Round 9: Single crochet around (18 sc)
Round 10: Single crochet around (18 sc)
Round 11: Single crochet around (18 sc)
Fasten off, leaving at least a foot or so of yarn to sew to the top of your hat.
Feel free to make these for yourself, friends, charity, whatever. If you want to sell things some dino hats made from this pattern, I would love it if you would link back to the blog.