Is it just the dog in you?

Over time man has used animal nature to  
to explain sensual claims
 
Let's start with the ego stroker
the bull that can get it done
The myth is bigger is always best
to make a woman come undone
 
Not all females adhere to this however
even stars have talked about too much
If it is enormous  
it may hurt and such
 
There's the thought the enormous girth
might incline a man not always to work
For his beef stick is god's gift to all
He may even be called a jerk
 
We also have the dog
A meaning that can go both ways
Position many like
But being called a dog never pays
 
Some may call their length a snake
though again another meaning that's bad
A player who is deceitful  
to me that fellow is sad
 
I admit of my limited knowledge
for such descriptions are not what I hear
Luckily never been downgraded or  
ever been reduced to dismissive tears
 
But in truth I think all of us would be smiling
if a lover said in the end
"Dear you fucked me like an animal
now come here and do it again!"