21. Guinea Pig
Guinea pigs make great pets because they love attention and lots of food, much like dogs. This little pig looks quite plump, as she is expecting a litter of babies. Guinea pigs can have up to five litters a year, with each containing up to five pups but usually around two. Their pregnancies last around 60-70 days (plus or minus a few) and this little one looks well on her way to the end. In fact, two days after this photoshoot she gave birth to five pups!