Because it’s delicious?
I gave my cat the fish oil that was left over after removing the salmon or tuna from the can. She loved it.
Their ability to sense tuna molecules is astonishing. I used to have a game I played against our cat. I NEVER won! I’d wait until she was asleep, sneak a can out of the cabinet quietly, creep into another room and close the door, and open the can. She was always waiting expectantly outside the door. Her reward was the juice I drained off the tuna. She was the most insane pet we ever owned, but we still talk abut her all these years since she went to that SPCA in the sky. Sigh.
I had to throw this one back (it was too big, you can only keep it for eating if it is between 29 inches and 31 inches long). But we did catch one last week on that charter we could keep and bring home to eat.
When I was cleaning the filets, I like to take off the dark colored meat, I think it tastes fishy. So I gave the stuff I removed to my cats, and they enthusiastically chowed it down.
I caught some Pollak and Haddock recently and gave the trimmings to my cats, and one was indifferent but unenthusiastically ate it, while the other one turned up his nose at it!
I guess they have standards-they only like the good stuff like the Striper!
Both of my cats presently refuse to eat fish of any kind. It’s really odd. My previous cats would nearly tear you arm off once the can was opened.