I HAVE ALL SHAPES AND SIZES AND COLORS. MY RAT TERRIERS HAVE BEEN USED FOR HUNTING SQUIRRELS, SKUNKS, POSSUMS, SNAKES AND OF COURSE RATS AND MICE. THEY ARE ALSO GREAT IN THE SHOW RING. THEY ARE A GREAT COMANION DOGS AS THEY GET VERY ATTACHED TO THE FAMILY THAT HAS THEM.THEY ARE AN ALL AROUND DOG. ALL MY DOGS ARE RAISED INSIDE THE HOUSE.