Beagles are a breed of small to medium-sized hound dogs that were originally bred for hunting rabbits and hares. Here are some facts about beagles:

1. Appearance: Beagles have a compact body with short, dense fur that comes in a variety of colors including tri-color (black, white, and brown), lemon, red and white, orange and white, and tan and white. They have long ears that are set low on their heads and large, expressive eyes.

2. Size: Beagles typically weigh between 18-30 pounds and stand around 13-15 inches tall at the shoulder.

3. Temperament: Beagles are known for their friendly and outgoing nature. They are social dogs that love to be around people and other animals. They are also curious and energetic, which can sometimes lead to mischief if they are not properly exercised and trained.

4. Intelligence: Beagles are intelligent dogs but can be stubborn and independent-minded. This can make them challenging to train, especially if they are not properly motivated or if their training is inconsistent.

5. Exercise: Beagles are active dogs that require daily exercise to keep them healthy and happy. They enjoy walks, hikes, and playtime in a fenced-in yard or dog park.

6. Health: Beagles are generally healthy dogs, but they are prone to certain health conditions like hip dysplasia, ear infections, and obesity. Regular veterinary checkups and a healthy diet can help prevent and manage these health issues.

7. Lifespan: Beagles have a lifespan of around 12-15 years.

8. Popularity: Beagles are a popular breed, ranking as the 6th most popular breed in the United States according to the American Kennel Club. They are also used in research labs and as detection dogs due to their excellent sense of smell.