Often I claim to be so hungry that I cam capable of eating an entire cow. This is never true.
I may hear you asking "but lighterside, how long would it take me to eat an entire cow?" Well...
A single cow, on average, yields 800lb of edible meat.
I think it's reasonable to say that you could eat 1/2lb of beef per meal and remain moderately healthy. So you would finish it in around six months.
I do love beef, but not that much.