Spiny dog fish are actually the smallest sharks in the world. They have five gills, one spine in front of each dorsal fin, and no anal fin. The largest dog fish ever found was 160 cm (63 inches) and 9.1kg (20 lb.). The spiny dog fish lives all around the world, not just in the Pacific Ocean. It is grey with a oval shaped tail, but the top of the fin is longer than the bottom. Spiny dog fish sometimes become a schooling fish and they also will dart toward a diver but then veer away from the diver, showing their speed, grace and power. The active spiny dog fish frequently swims at the surface, finning or thrashing in pursuit of plankton, herring or other small fishes. You should watch this from a wharf, the shore or a boat.
It appears that Ivor, while still not the longest, definitely has broken the record for heaviest dogfish alive. And he STILL WANTS MORE TREATS!
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