the trout i caught yesterday was really a tank. When I first hooked it I thought maybe a 25-26 inch fish. It was an eyelash under 20 inches but had an extremely stout body. After I released it I saw something in my net. It was about a six inch brown that looked partially digested.
What have you seen a big brown eat and back when you cleaned trout…what odd stuff have you found in their stomachs?
click to enlarge.
No doubt in my mind that they are cannibals.
While these are not my own photos, it appears that brown trout have discovered a better mouse trap 
Kelly.
how could those trout still be hungry with all those mice in them?
One gluttonous species of trout there.
When I was a kid fishing Fall River in N. Ca. I caught lots of browns. found many things in their stomachs. Mice, birds, once a muskrat and one other time a water snake about 20" long. We fished for them with a spinner that had turkey feathers tied on it to imitate a thrashing baby bird. Caught many browns in those days…(the early '60s) lots of 'em over 20". That belly ful of mice is no surprise…ModocDan
I bet that was one glad fish to have been caught and scared to be released…“please don’t put me back in that thar Briar Patch!!” LOL
I watched a large Rainbow drown and eat a small rattlesnake at Rocky Ford Creek. The snake was very small, 18 inches at the most, but still very venomous, and the trout was close to 30 inches (Rocky Ford has some very large trout). As far as I know, the trout survived, the snake did not.
REE