At least 5.5 now.. I think older though.. he looks to be going downhill now ..
He is pretty broken up from fighting I guess.. and has some kind of growth or injury on his neck..
I call him Big Brows because that is really all he has is brow tines.. although they are not really big .. and one is broke off this year
Pics through the past 4 years..
2010
2011
2012
2013