Some of the people I play with would grab your sandwich out of the cart while you're off looking for that stray ball ......
................................ not really. Actually it's the brazen ducks that grab your sandwiches around here, pesky blighters.
Now that I'm more aware of the many rattlesnakes that lurk on the courses here in sunny San Diego, including a very large one spotted in light rough at a certain local track recently (I saw definitve photographic evidence), I'll be a tad more reluctant to scamper into the undergrowth to pick up a ball I see in there.
We saw a 4' Coontail (Western Diamondback) curled up in the rough about 20' off the first green last week on my home course (in AZ). One of the marshals got rattled at near the 18th tee box, but the snake was gone by the time he turned back around to check it out. That's warning enough for me to stay out of the brush.