How easy can a rat squeeze up your toilet?

This video will bring the fear to many, rats, if they wanted can quite easily find themselves upon your bathroom floor!
A creature seldom seen, but never more than a metre away, shall show you how easy it is for a rat to infiltrate your personal space! Your toilets are far from safe, as these cunning creatures, can easily navigate their way into your home!
Hopefully you have an extermination team nearby, to dispell the sudden fondness, these vermin have made of your home!