Both of the backgrounds are age-old masterboards that I have lying in a drawer. Not much to say otherwise. The Vikuña has just brayered paints and some stamping with "aztec doll" stamps from Rubber Dance, though I guess the Peru/north Chile is Inca area, not Aztec... The Unau is called the Linnaeus two-toed sloth, and it's background just has paints, both brayered and stencilled. Here are the backs of the cards with some info about the animals... but you could just as well check wikipedia!
Vikuña and Unau.
The previous cards for this (all-year-long) challenge can be found under the following links. The year is nearing it's end, where does the time fly?!?