Someone named the dogfish on a lark;
Neither dog nor boney fish, it’s a shark;
It won’t fetch or roll over
Or answer to “Rover”
And its bite is far worse than its bark.
See also this limerick’s Fishy Names companion pieces:
Sharks are completely boneless, as their bodies are made entirely of cartilage — hence “nor boney fish” above. Because sharks are almost impervious to cancer, researchers are studying shark cartilage to develop treatment for humans. Read more facts.