There are many dog breeds that begin with the letter "I". Here's a list:
Ibizan Hound
Icelandic Sheepdog
Inca Hairless Dog
Irish Glen Imaal Terrier
Irish Red and White Setter
Irish Setter
Irish Staffordshire Bull Terrier
Irish Terrier
Irish Water Spaniel
Irish Wolfhound
Istrian Coarse-Haired Hound
Istrian Short-Haired Hound
Italian Bulldogge
Italian Greyhound
Italian Hound
Italian Spinoni
Poodle
Utonagan.
Itdepends on the temperment of the dog at the beginning but usually yes.
Hound dog, Husky
Bernese mountain dog
Poodle
Shelty
Neapolitan Mastiff
Weimaraner is a dog breed recognized by the American Kennel Club. Whippet is a dog breed recognized by the American Kennel Club. Welsh Terrier is a dog breed recognized by the American Kennel Club.
bug pug (a breed of dog)
Xoloitzcuintli is a dog breed recognized by the American Kennel Club. It starts with the letter x.
Jack Russel terrier