Crazed Tank Cat is very sturdy, having one of the highest health values in the game at strength 100% magnification.
Crazed Tank attacks quite differently from the Crazed Cat: instead of cranking out rapid, close-quarters DPS, it will occasionally bash its head, dealing heavy damage in a shockingly large area. To compensate an attack of this caliber, Crazed Tank moves extremely slowly (note that it often advance a little due to its short backswing). Its other notable quality is its Base Destroyer, which will allow it to destroy the Cat Base in seconds.
This enemy is the polar opposite of his allied counterpart. Where the Cat Unit is weak on his own but makes up for it with high speed and spammability, the Enemy Unit is incredibly powerful but moves slowly and only spawns once or twice per level. It's the same with Crazed Cat and the reverse with Crazed Fish Cat.