Hospital Cage. A tank or large carrier like the plastic tanks above, can be used for a poorly hamster. It makes them easy to observe or capture for medication. It can be easily heated with an underfloor heater if needed, and is an easy way to restrict movement for post operative care or for a healing broken limb. It's possible to keep an animal in a 12 litre plastic tank for a week if needed. You can also make a plastic bin cage of around 24 litres if you prefer something bigger or a mini duna cage for a syrian. It's important to remember that this is only temporary caging for a sick or recovering animal.