* Koalas: Typically weigh between 5-14 kg (11-31 lbs) and are about 60-85 cm (24-33 inches) long.
* Two-toed sloth: Weighs between 4-8 kg (9-18 lbs) and is about 50-60 cm (20-24 inches) long.
* Three-toed sloth: Weighs between 3-6 kg (7-13 lbs) and is about 45-60 cm (18-24 inches) long.
So, a koala is generally larger than a two-toed sloth, but smaller than a three-toed sloth.
However, it's important to note that there can be some individual variation in size within each species!