ever since his adventure with the percheron colt at argentan , fergus had seized every chance to get on a horse , and jamie , amused and sympathetic to a fellow horse-lover , had indulged him , taking him up behind his own saddle when he rode through the paris streets , allowing him now and then to get up alone on one of jared 's coach horses , large stolid creatures that merely flicked their ears in a puzzled sort of way at fergus 's kicks and shouts .