Nancy Morgan
#7 They like to play with the ball, even while sleeping.
#8 Jack Russell can reach 10 to 15 inches in height and 14 to 18 pounds of weight.
#9 They are independent and lively little dogs.
#10 They are also very playful.
#11 Jack Russell has an average lifespan of 13 to 16 years.
#12 Jack Russell is prone to sunburns because of its sensitive skin and thin, light-colored fur.
