Are the redwall book animals human sized?

It is understood that they are human-sized. Some people think that everything is just built in "rodent-size", but is proved, in book one (Redwall) that they are, indeed, human size: the bad guy, Cluney the Scourge, in the very beginning, is said to be riding a cart pulled by a horse (or pony), and how he was driving it. Either they're all human sized, or that is one REALLY small pony! ;)