Board Thread:TV Show Discussion/@comment-36405009-20180731152220/@comment-28895263-20180906050634

Agreeing with Chxcken: Dragonstone, as described in the books, is no place to keep large numbers of horses.

After the long sea voyage, it would have been imperative to get those horses off the ships, and onto good grazing, immediately. Horses need to move.

I would have put the horses and most of the Dothraki off in the Stormlands. Good grazing, close enough to King's Landing to be useful, conveniently en route from Meereen to Dragonstone, and no love for the Lannisters from any remaining Baratheon loyalists.

We haven't seen very many Dothraki on Dragonstone during Season 7; just a Queen's Guard. Most of them are tending their horses on the mainland.