Plainly she expected him to do something, but what this might be Alcatraz could not tell.

Besides, a growing thirst was making him irritable and the insistence of the grey mare made him wish to fasten his teeth over the back of her neck and shake her into better behavior.
By her antics she had worked him around to the head of the herd and she had no sooner reached this point than she threw up her head with a shrill neigh and started off at a gallop.

The entire herd rushed after her and Alcatraz, in a bound, ranged along side the grey and a neck in the lead.

While he ran he whinnied a soft question to which she replied with a toss of her head as though impatient at such ignorance.

In reality she was guiding the herd.