Can a 1 year old beagle be in heat?

It is very uncommon for a beagle to go into heat before 6 months of age. The typical age range for a beagle to start her first heat cycle is between 6 and 12 months. However, some beagles may experience their first heat cycle earlier or later than this range. If you are concerned about your beagle's development, it is best to consult with a veterinarian.