Jack Russells Animal Pictures

Canis lupus

Larina Marina/Shutterstock.com

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Jack Russell Terrier playing on the beach at sunset — Larina Marina/Shutterstock.com

Jack Russell Terrier playing with toy — Victoria Antonova/Shutterstock.com

Pedigree Jack Russell Terrier dog outdoors on grass field on a sunny spring day. — BIGANDT.COM/Shutterstock.com

Portrait of Jack Russell Terrier, a dog playing on the beach. — Larina Marina/Shutterstock.com

Gorgeous puppies of Jack Russell Terrier in the garden — Zuzule/Shutterstock.com

portrait of a purebred jack russel terrier in studio

Purebred Jack Russel terrier in studio — cynoclub/Shutterstock.com

Dog howling and barking guarding backyard (front view)

Jack Russell barking outside — alexei_tm/Shutterstock.com

Terrier dog breeds are known to act hostile towards people and other dogs.