Chule, a six-month-old mini pig, looks at the camera in Mexico City, December 11, 2015. Mini pigs can grow to about 30 kg (66.1 lbs) in weight and about 35 cm (1.1 ft) in height, according to the company Mini Pigs Mexico. The company says that the mini pigs' popularity as pets is growing and around 300 are sold every year in Mexico, with prices ranging from $350 to $1,600. (Photo by Edgard Garrido/Reuters)





Goyo, an eight-month-old mini pig, plays with a dog in Mexico City, December 21, 2015. (Photo by Edgard Garrido/Reuters)





Rocky, a seven-month-old mini pig, poses for a photo in Mexico City, December 23, 2015. (Photo by Edgard Garrido/Reuters)





Hami, a three-month-old mini pig, eats french fries near to Chule, a six-month-old mini pig, in Mexico City, December 11, 2015. (Photo by Edgard Garrido/Reuters)





Rocky, a seven-month-old mini pig, is pictured as his owner bathes him in the garage of his home in Mexico City, December 23, 2015. (Photo by Edgard Garrido/Reuters)





Goyo, an eight-month-old mini pig, walks in the garden with his owner in Mexico City, December 21, 2015. (Photo by Edgard Garrido/Reuters)





Goyo, an eight-month-old mini pig, runs as a dog chases him in Mexico City, December 21, 2015. (Photo by Edgard Garrido/Reuters)





Rocky, a seven-month-old mini pig, is bathed by his owner in a garage, in Mexico City, December 23, 2015. (Photo by Edgard Garrido/Reuters)





Goyo, an eight-month-old mini pig, eats bubble gum in Mexico City, December 21, 2015. (Photo by Edgard Garrido/Reuters)





Rocky, a seven-month-old mini pig, receives a piece of apple from his owner in the kitchen, in Mexico City, December 23, 2015. (Photo by Edgard Garrido/Reuters)





Chule, a six-month-old mini pig, walks in Mexico City, December 11, 2015. (Photo by Edgard Garrido/Reuters)





Rocky, a seven-month-old mini pig, is held by his owner in Mexico City, December 23, 2015. (Photo by Edgard Garrido/Reuters)