These cats are typically active and playful, even as adults, and are often described as more dog-like in behaviour than other cats. Siamese cats, due to their desire to be near people or other cats, occasionally suffer from depression or separation anxiety if left alone for long periods of time, and it is for this reason that Siamese cats are often bought in pairs so that they can keep each other company. The original Siamese imports were medium-sized, rather long-bodied, muscular, graceful cats.