If the yearling has always had this kicking and rearing and jumping over fences thing since birth will she ever change?

QUESTION: 

Hi Mark,

I have a four and a half year old mare for about one month. I bought a yearling on May 1 and have had her for six days. I just recently found out that if she is in the stall by herself she will buck and rear and whines. She will whine and miss behave if by herself out in the field, she will jump the fence. She (Luna) has become very attached to Nanna my 4 1/2 year old. Nanna is very uptight when she sees some one handling the one year old. My 4 1/2 year old is in season right now could I be misreading what is going on. The one year old was like suckling the 4 1/2 year old. My question is if the yearling has always had this kicking and rearing and jumping over fences thing since birth will she ever change? My other question is if my 4 1/2 year old has adopted the yearling what can I do? And what can I do to correct the yearlings kicking and rearing and jumping over the fence to get to the 4 1/2 year old?

ANSWER:  

Maria,

If I understand correctly what you are saying, is that the other yearling is nursing the older mare? That is just wrong, plain wrong. Separate them and put up a higher fence so she will not jump out. Stop worrying about all the horses fretting and keep them separate. Do not put them together! Separate them and in one week it will all be over…

Mark