How big is the average size of a pika?

Pikas are relatively small animals, with an average adult size ranging from 15 to 25 centimeters (6 to 10 inches) in length and weighing between 100 to 300 grams (3.5 to 10.6 ounces). However, the size can vary depending on the specific species and geographic location. For example, the American pika (Ochotona princeps) tends to be larger than other pika species, while the collared pika (Ochotona collaris) is generally smaller.