Why an Animal Bladder Could Hold Water
A bladder is a flexible sac built to contain liquid, so once removed intact it could serve as a ready-made pouch. Its natural shape did some of the work that a craftsperson would otherwise have to do: there was no need to stitch together a container from flat pieces. The opening could be tied shut after filling, making the bladder useful for carrying liquids.
A Practical Vessel, Not a Perfect One
The material was pliable and light, but it was also organic. A bladder could tear, leak, or spoil if it was not handled and kept clean. Its size and shape depended on the animal, and it offered less control over the finished vessel than a container made from a rigid material. Still, when people needed a portable liquid holder and had access to an animal, using a bladder made practical use of a part that might otherwise go to waste.
That makes the familiar image of Aquarius with a crafted jug a polished symbol, not the only kind of vessel people could use. Some containers began as part of an animal rather than as a shaped piece of pottery or metal.
