Who Is the Biggest Dog in the World?
As of 2025, the title of biggest dog in the world belongs to Zeus, a Great Dane from Texas, USA. Zeus measured 44 inches tall (at the shoulder) and weighed over 155 pounds. Sadly, Zeus passed away in 2023, but he still holds the record in the Guinness World Records for tallest dog ever.
Biggest Dogs in the World (All-Time Tallest)
| Dog Name | Breed | Height at Shoulder |
|---|---|---|
| Zeus (2022) | Great Dane | 44 inches |
| Freddy | Great Dane | 40.75 inches |
| Gibson | Great Dane | 42.2 inches |
| Titan | Great Dane | 42 inches |
| Boomer | Landseer Mix | 36 inches |
| Breed | Known For | Avg. Size |
|---|---|---|
| Great Dane | Tallest dog breed | Up to 34–36 inches tall |
| English Mastiff | Heaviest dog breed | 28–31 inches, 160–250 lbs |
| Irish Wolfhound | Tall, lean, fast | 30–35 inches, 140–180 lbs |
| St. Bernard | Strong, calm, rescue dog | 28–30 inches, 140–180 lbs |
| Newfoundland | Swimmer, kid-friendly | 26–28 inches, 130–150 lbs |
Top 5 Largest Dog Breeds by Height & Weight
- Great Dane – Tallest breed, can reach over 3 feet tall at the shoulder
- English Mastiff – Heaviest breed, can weigh over 250 pounds
- St. Bernard – Famous mountain rescue dog, huge and powerful
- Irish Wolfhound – Very tall with a lean build
- Newfoundland – Massive swimmer, great with families and kids
FAQ
Q1: What is the biggest dog breed in the world?
A: The Great Dane is the tallest, while the English Mastiff is the heaviest.
Q2: Who holds the record for the tallest dog ever?
A: Zeus the Great Dane (44 inches tall) holds the world record.
Q3: Are giant dog breeds good family pets?
A: Yes. Most large breeds like Great Danes and Newfoundlands are gentle and loyal.
Q4: How much food does a giant dog eat?
A: Big dogs like Great Danes can eat 6–10 cups of dog food a day, depending on activity level and age.
Q5: What’s the average lifespan of the biggest dogs?
A: Giant breeds usually live 6–10 years, depending on health and care.
Final Thoughts
The biggest dogs in the world may be massive, but they’re usually gentle giants. Whether you’re curious about record-holders like Zeus or want to adopt a giant breed, knowing their needs and personalities is key. These dogs may take up space, but they give back even more love.