Did you know that 40 per cent of all mammal species in this world are rodents. The skin of the Naked Mole Rat lacks the neurotransmitters that allow it to feel pain. The main difference between a hamster and a gerbil is that the former is nocturnal and the latter isnt. The capybara is the worlds largest rodent, weighing up to 80kg. The African pygmy mouse weighs only seven grams. KnowYour Rodent is an illustrated guide to twenty-three rodent species,...