Furious Crawdad are caught from pools called "Highland Mixed School". These pools are found in three elevated lakes in Terokkar Forest, Outland:

1. Blackwind Lake (near Skettis) - 10 confirmed pool spawning locations (2 on the western side of the island in the lake, 8 around the edge of the lake).
2. Lake Ere'Noru (above Allerian Stronghold) - 4 confirmed pool spawning locations.
3. Lake Jorune (above Stonebreaker Hold) - 3 confirmed pool spawning locations.

Mr. Pinchy can be obtained from fishing in the lakes of Terrokar Forest that require you to have a flying mount.

1. Mr. Pinchy is fished from Highland Mixed Schools.
2. He will grant you 3 wishes, each on a 2 day cooldown.
3. There is an 8% chance per wish that you will be rewarded with a Magical Crawdad Box, this is what you need to get the achievement.