Quote:
	
	
		| 
			
				 
					Originally Posted by GBBob
					
				 
				I thought a filly became a mare at 4??..no? 
 
EDIT: I just confirmed I was wrong 
			
		 | 
	
	
 That's how we do it in NZ and Australia. Colts become horses at 4, fillies become mares at 4. Don't know why it's different, but there you go.