Shoe size Shoe size A shoe size is an indication of the fitting size of a shoe for a person. There are a number of different shoe-size systems used worldwide. While all of them use a number to indicate the length of the shoe, they differ in exactly what they measure, what unit of measurement they use, and where the size 0 (or 1) is positioned. Some systems also indicate the shoe width, sometimes also as a number, but in many cases by one or more letters. Some regions use different shoe-size systems for different types of shoes (e.g. men's, women's, children's,
Montane guinea pig Montane guinea pig The montane guinea pig, "Cavia tschudii", a type of rodent, is a guinea pig species from the Andes in South America. The montane guinea pig is the likely ancestor of "Cavia porcellus", the cavy or domestic guinea pig. Peruvian wild guinea pigs were first described by E. T. Bennett in 1835, who termed them "Cavia cutleri". Johann Jakob von Tschudi, in an 1845 publication, used the term "Cavia cutleri" to refer to what are now considered two separate entities - the first, Bennett's "Cavia cutleri", which was later (by Oldfield Thomas in 1917) identified as probably a