1) Family caviidae 2) Mammal family 
==Characteristics== With the exception of the maras, which have a more rabbit-like appearance, caviids have short, heavy bodies and large heads. Most have no visible tails. They range in size from the smaller cavies at 22 cm in body length, and 300 grams in weight, up to the capybara, the largest of all rodents at 106 to 134 cm in length, and body...
[n] - a family of Hystricomorpha
family Caviidae noun a family of Hystricomorpha