River ram

[golfguy0912]

great pic. looks similar to one i had to run off of the highway, about the same age

[bearpaw]

Aging a ram?
Are those striations on that ram added on  yearly basis? Making this one about
4 1/2???

Each growth ring is 1 year, I have been told that is caused by the slowdown of growth in the winter, much like growth rings on trees. Not absolutely sure that is exactly true, but it makes sense.