one of the first Exhibit Building Workshops was Markhor's
have you looked at it ? and at the winning entry ?
they are here;http://www.zootycoonunleashed.com/ZTForums/index.php?showtopic=1063
just a place to try ???
Edit to add;
Also what I have found is, with the highland animals is they are quick to anger, and slow to forgive
So if you have built the exhibit with the animals in it and they are "ticked".
what I do, is once I get good suitability is sell the grumpy critter and buy new ones
also remember that every time the zookeeper visits, the animal happinees goes up,
so if you have the patience, throw the zookeeper in the exhibit a few times