The ‘Kevin’s’ at 6?

[ahlam1399]

My horse has recently decided to start pushing his luck and being a bit of a prat. Pretending to be scared of things one minute then forgetting they are scary the next etc. My question is is 6 too old for the teenage stage or could there be more going on?

أكثر... (http://www.horseandhound.co.uk/forums/showthread.php?758319-The-?Kevin?s?-at-6&goto=newpost)