It's best to use only a harness made for a rabbit on a rabbit. Although a Jack Russel may be the same size as your rabbit, its body is shaped very differently. An ill-fitting harness that prevents a rabbit from moving normally could lead to serious injury.
If he's untrained, yes.
because jack russells are good at pest control
None, Jack Russells are dogs, they have puppies not babies.
yes i have 2 jack russells and both of them have webbed feet.
water
dobermens
no they are from England
No.
mammal
NO! These dogs are bred as hunters. I have two of my own and we lived in a suburban neighborhood and still they hunted a rabbit, squirrel, and many snakes. If you are thinking of getting a Jack Russel get rid of your hamster. Also always keep them on a harness and leash. They are very territorial and could snap a yorkies neck in an instant. Never let them of a leash!
no they are hyperactive
you mean breed right