In a nag animal they constitute a positive unsoundness, and lameness in this case is more often than not an accompanying symptom. Causes.

I'll go yer five hundred dollars agin a hundred that the gray nag gits left behind.

At the foot of a very brown and parched-looking hill stood the little wooden hut, facing the valley of the Pohru and the Kaj-nag range.

"My nag shies at neither bear nor wolf!