they have to pump more blood through their bodies. They have a larger amount of blood that they have to move so it takes more to move the blood. this results in a faster heartbeat.
all dogs have the same size heart, that is why larger dogs live shorter than smaller dogs
A dogs heart is the same size as ours.But when running,it beats faster than ours.
A normal pulse rate for a healthy adult, while resting, can range from 60 to 100 beats per minute (BPM). During sleep, this can drop to as low as 40 BPM; during strenuous exercise, it can rise as high as 200-220 BPM. Generally, pulse rates are higher in younger people.
a dogs heart beats about 110 times per minute for a healthy dog
A dog's heart beat can vary from 100 to 150 beats per minute depending on the breed. Normally, the smaller the dog the faster the beats. Yes, but if it beats too fast there's a problem. If this is happening see the vet. Our dog's heart speeds up when she hears thunder / lightning and / or fire works.
a dogs heart beats about 110 times per minute for a healthy dog
For a puppy, the average heart rate is 120-160 beats per minute. For dogs up to 30 lbs., the heart rate is 100-160 and for dogs over 30 lbs. the heart rate is 60-100 beats per minute.
The size of a dogs heart will vary greatly with the size of the dog.
Of course however as part of a balanced diet,bigger dogs need2substain larger quantities than smaller dogs
dog Heart rate - 180 beats a minute for puppies 60-160 beats per minute for most adult dogs 180 beats a minute for toy breeds
For dogs weighing 30 lbs. or less, the average heart rate is 100 to 160 beats per minute. For dogs weighing more than 30 lbs., the average heart rate is 60 to 100 beats per minute.
it depends on how much fur they have. Their fur acts as an insulator, and larger dogs also have larger amounts of blood traveling their bodies, so they are able to stay warmer.