Great Dane vs Jack Russell Terrier: Which Suits Your Home?

Put a Jack Russell Terrier next to a Great Dane and the terrier could walk under it without ducking. The Dane runs 110-175 lbs and 28-34 inches; the Jack Russell tops out at 17 lbs and 15 inches. Ten Jack Russells wouldn't match one Dane's upper weight. This one is not close.

Don't let the Jack Russell's size fool you -- it's rated very high (5/5) for exercise need, well above the Dane's moderate (3/5). A JRT that doesn't get real running time each day will find its own entertainment, usually destructively. The Dane needs steady daily movement too but tires out with less; its exercise ceiling is lower than its size implies.

Both breeds keep coat care simple. The Dane rates very low (1/5) for grooming and the Jack Russell rates low (2/5) -- a quick brush covers either dog. Shedding lands at moderate (3/5) for both, so neither is the right pick if you want a coat that doesn't show up on the couch.

Neither breed is an apartment natural. The Dane rates very low (1/5) for apartment suitability, mostly on size; the Jack Russell rates low (2/5), mostly on noise and energy. The terrier is rated very high (5/5) for barking against the Dane's low (2/5) -- in a shared building, the small dog is likely to be the louder neighbor complaint.

Both breeds rate low (2/5) for first-time owners and moderate (3/5) for trainability -- this isn't a beginner-versus-expert matchup so much as two dogs that both need a confident handler. The Dane's challenge is managing size and strength; the Jack Russell's is channeling a terrier's independence and prey drive into actual obedience.

With kids, the Dane rates very high (5/5) against the Jack Russell's moderate (3/5). With other dogs the gap widens further -- high (4/5) for the Dane, low (2/5) for the terrier, which has a well-earned reputation for scrapping with dogs it doesn't know. Both rate moderate (3/5) with strangers, so neither is naturally standoffish or naturally a social butterfly.

The Jack Russell's 13-to-16-year lifespan nearly doubles the Dane's 7-to-10. Hip dysplasia is the one condition both lists share. Past that, the Dane's risks are the familiar giant-breed set -- bloat, dilated cardiomyopathy, Wobbler syndrome, bone cancer -- while the Jack Russell's run toward eye and neurological issues: progressive retinal atrophy, lens luxation, seizures, and a myelin disorder specific to the breed.

The gap here is steep: $200-$400 a month and $3,000-$5,000 in year one for the Dane, against $70-$140 a month and $1,100-$2,000 for the Jack Russell. Cost level is rated very high (5/5) for the Dane and low (2/5) for the terrier -- of the ten pairs in this batch, this is about as far apart as the dollar figures get.