not to be pedantic but for anyone else who reads this thread: its basically only about leg lengths just to be clear here. there's nothing else different physically. parsons were originally bred as hunting dogs. small enough to hole an animal but long enough legs to keep up with the hounds. so the name keeps this original breed 'standard' that was created.
-even though genetically they're basically the same breed and you can get parsons and jacks from the same litter.
jacks are bred specifically for shorter stubbier legs(i guess like dachshunds were?) and for better pet temperament.
p.s. cute dog!! -also notice how your dogs legs are longer than the jack's in this vid
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u/Various_Alfalfa_1078 1d ago
My dog looks exactly the same. I had him d.n.a. tested. 90%+ Parson Russell Terrier. https://imgur.com/a/NAfqR6c