Capuchin monkey - photo courtesy Bart Wright
We already know some monkeys display above average intelligence. One way by which we can tell is their use of tools. Studies have shown that capuchin monkeys use boulders and logs as anvils upon which they can crush nuts.
Group of mice
Will there ever be a cure for alcoholism? Well, some laboratory studies show that certain drugs might stop the cravings. But they might also cause serious side-effects such as aggressive behavior.
Controlled conditions and accurate data recording are key in scientific success and a stationary lab provides these controlled conditions while allowing scientists to observe test participants unobtrusively.