I have been working with a 10 month old filly, training her to trot in hand lately. She trots up perfectly and doesn't hesitate but she sometimes tries to nip me as she is trotting along beside me. I am so confused! She is the most respectful filly I know, never bites, pushes, kicks, anything! I don't know why she would do this. She seems to like trotting and wants to go even faster but after a little bit her ears go back and she tries to bite. She doesn't do this all the time - just sometimes. Am I doing something wrong? Should I stop trotting her, or is this a respect issue? She's never had a problem with being nippy and is perfect in everything else.
I had another question too. One colt I'm working with is the opposite. He does not like to trot in hand and will go no faster than a walk. Can anyone give me some tips to get him to trot? He's very respectful too and never tries to bite, but he is so laid back he's not really into trotting!