Pouch tigers[N 1] are an exotic species of marsupial animals[N 2] from an unknown land, far from Westeros or the Free Cities.
According to Syrio Forel, the Sealord of Braavos keeps live specimens kept in his menagerie.
||Hear me. The ships of Braavos sail as far as the winds blow, to lands strange and wonderful, and when they return, their captains fetch queer animals to the Sealord's menagerie. Such animals as you have never seen, striped horses, great spotted things with necks as long as stilts, hairy mouse-pigs as big as cows, stinging manticores, tigers that carry their cubs in a pouch, terrible walking lizards with scythes for claws. Syrio Forel has seen these things.
- Syrio Forel
to Arya Stark