Any ideas

[parsley]

why a horse would suddenly turn on its field mates (V. aggressive)- horse has been moved yards recently and has never been violent towards other horses before - no other apparent changes to management???

 

[Toby_Zaphod]

Could it be trying to sort out where it stands in the pecking order of the new group?

 

[ladylisa]

there might have been a slight fall out between them and he's just making it known to the other horses that he is not going to stand for it again.

 

[AmyMay]

Definately pecking order. This is the kind of behaviour my mare would demonstrate (has demonstrated in the past).

 

[Sal_E]

Only other thing I can think of is if horse is feeling unwell (they can genuinely get over-sensitive & defensive - presumably a survival thing so as not to show a weakness) OR horse is being over-fed & under-worked - we have a problem on our yard at the moment with a horse being fed competition mix to be ridden 2/3 times a week, poor bloody horse is acting like a hyper-active child & other horses are suffering for it (problem will soon be solved I think).