Lump on My Dog: When to Worry and When to Wait
Found a lump on your dog? Learn when to worry and when to wait for a lump on my dog, especially for adopted pets with unknown histories.
The English Mastiff is one of the most ancient and massive dog breeds, with roots tracing back over 2,000 years to ancient Britain and possibly earlier Molosser-type dogs of Asia. Males commonly weigh 160 to 230 pounds and stand 30 inches or taller at the shoulder, making them among the heaviest domestic dogs in the world. Their short, dense double coat comes in fawn, apricot, or brindle — always with a distinctive dark mask on the face.
Despite their imposing size, Mastiffs are famously gentle, calm, and deeply loyal — often called "gentle giants" with good reason. They are patient and protective with children in their family, though their sheer mass means supervision around small kids is wise. Mastiffs tend to be reserved with strangers but rarely aggressive, preferring to position themselves between their family and any perceived threat.
Ready to welcome a magnificent gentle giant into your home? Explore Mastiff adoption opportunities on Puplister.
Answer 5 quick questions to see how well this breed matches your lifestyle.
18 pets available
19About the Weimaraner The Weimaraner was developed in the early 19th century at the court of Weimar in Germany, where nobles bred these dogs to hunt large game — boar, bear, and deer — before transitioning them to bird dog duties as large game became scarce. These striking, athletic dogs stand 23 to 27 inches tall and weigh 55 to 90 pounds, with a sleek, powerful build designed for speed and endurance. Their distinctive short, smooth coat comes in shades of mouse-gray to silver-gray — earning them the nickname "Gray Ghost" — complemented by striking amber or blue-gray eyes. Temperament & Personality Weimaraners are fearless, friendly, and intensely devoted to their families — they crave human companionship and do not do well as kennel or outdoor-only dogs. They are energetic and playful with children, generally sociable with other dogs, and possess an intelligence that demands both physical and mental outlets. Without adequate exercise and attention, Weimaraners become anxious, destructive, and can develop severe behavioral problems. Pros Strikingly beautiful with an unmistakable silver-gray appearanceVersatile sporting dog — excellent for hunting, running, and competitive eventsHighly intelligent and trainable with consistent, positive methodsShort coat requires minimal grooming and sheds only moderately Cons Extreme separation anxiety — one of the most prone breeds to this conditionRequires intense daily exercise — 2 or more hours of vigorous activity is typicalProne to bloat (gastric torsion), hip dysplasia, and hyperuricosuriaCan be destructive on a grand scale when bored or anxious — has been known to eat through drywall The "Gray Ghost" is a magnificent companion for the active and committed — discover Weimaraners on Puplister.
21 pets available
10About the Whippet The Whippet was developed in Victorian England by coal miners and mill workers who bred small Greyhounds with terriers to create an affordable racing and rabbit-coursing dog — earning the nickname "the poor man's racehorse." These elegant sighthounds stand 18 to 22 inches tall and weigh 25 to 40 pounds, with a streamlined, aerodynamic build capable of reaching speeds up to 35 miles per hour. Their short, smooth coat comes in virtually any color or pattern and lies close to the body, accentuating their graceful, muscular contours. Temperament & Personality Whippets are gentle, quiet, and remarkably calm indoors — often spending hours draped elegantly across furniture in poses that would make a greyhound proud. They are affectionate and sensitive with their families, good with children (though their slender build makes them vulnerable to rough play), and generally friendly with other dogs. Despite their sprinting ability, Whippets are surprisingly low-energy at home and are often described as the ideal apartment dog for owners who enjoy outdoor exercise. Pros Extremely calm and quiet indoors — one of the most unobtrusive housematesShort, low-maintenance coat with minimal shedding and no doggy odorGentle, affectionate nature — rarely aggressive toward people or other dogsHealthy breed with a long lifespan of 12 to 15 years Cons Intense prey drive — will chase and potentially catch small animals including catsThin skin and low body fat make them sensitive to cold and prone to scrapesCannot be trusted off-leash in unfenced areas — once they run, they cannot hear youSusceptible to anesthesia sensitivity and cardiac arrhythmias Whippets are the perfect blend of couch companion and outdoor athlete — find one looking for a home on Puplister.
40 pets available
11About the Treeing Walker Coonhound The Treeing Walker Coonhound was developed in the United States from Walker Foxhounds in the mid-20th century, selectively bred for their exceptional ability to trail game and "tree" raccoons by chasing them up a tree and baying until the hunter arrives. These elegant, athletic hounds stand 20 to 27 inches tall and weigh 50 to 70 pounds, with a lean, muscular build and the classic tricolor pattern — white, black, and tan — reminiscent of their foxhound ancestry. Their short, smooth coat is dense and protective, well-suited for long hours working through brush and rough terrain. Temperament & Personality Treeing Walker Coonhounds are confident, intelligent, and affable — possessing a friendly, sociable nature that makes them enjoyable companions both in the field and at home. They are gentle with children, typically welcoming to strangers, and usually get along well with other dogs, especially those they've been raised with. Their hunting instincts run deep, however, and they can switch from couch potato to tireless tracker the moment an interesting scent crosses their path. Pros Friendly, easygoing temperament — excellent with families and other dogsLow-maintenance coat needing only weekly brushingSuperb endurance for hiking, running, and outdoor adventuresGenerally healthy breed with a lifespan of 12 to 13 years Cons Extremely vocal — loud baying and howling are a defining breed traitPowerful scent drive makes off-leash reliability very challengingRequires substantial daily exercise — bored Walkers can be destructiveProne to ear infections and hip dysplasia Treeing Walker Coonhounds bring athletic grace and a sweet disposition to any home — explore available listings on Puplister.
29 pets available
14About the Shiba Inu The Shiba Inu is Japan's oldest and smallest native breed, originally bred to flush birds and small game in the dense mountain underbrush — "shiba" may refer to brushwood or the breed's red color, while "inu" simply means dog. These compact, agile dogs stand 13.5 to 16.5 inches tall and weigh 17 to 23 pounds, with a fox-like face, small triangular ears, and a curled tail. Their stiff, plush double coat comes in red, sesame, black and tan, or cream, with distinctive "urajiro" (cream to white ventral markings). Temperament & Personality Shiba Inus are bold, alert, and fiercely independent — often described as more cat-like than dog-like in their self-possession and fastidious grooming habits. They are loyal to their families but on their own terms, and their strong-willed nature means they do not blindly follow commands. Shibas are known for the infamous "Shiba scream" — a loud, distinctive vocalization produced when displeased or overjoyed — and they can be aloof with strangers and sometimes aggressive toward other dogs. Pros Naturally clean and almost cat-like — easy to housetrain and self-groomingCompact, manageable size for apartments with adequate exerciseLoyal and devoted to their family once trust is establishedHealthy breed with a long lifespan of 13 to 16 years Cons Extremely independent and stubborn — not recommended for first-time ownersStrong prey drive and unreliable recall make off-leash freedom riskyCan be possessive of food, toys, and territory (resource guarding)Prone to allergies, patellar luxation, and hip dysplasia The Shiba Inu's spirited independence and striking looks have won fans worldwide — discover Shibas on Puplister.
Found a lump on your dog? Learn when to worry and when to wait for a lump on my dog, especially for adopted pets with unknown histories.
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