Not necessarily. The heart rate of a dog can be influenced by a variety of factors, including stress, excitement and exercise. But the heart beat of a dog should not "jump". If a dog's heart beat is maintaining a consistent rhythm of around 100 bpm, and then suddenly "jumps" followed by returning to normal, it could be a heart murmur. They are generally harmless, but can become quite severe. Call your veterinarian and ask him/her to ask listen to your dog's heart.
Low heart rate is known as Brachycardia. To find out what is wrong with your Dog, your Vet will need to perform some tests.
I would consider this to be a normal heart rate for this size of dog. I have a 30lb dog and her resting heart rate is 60-65. Just depends on the breed and level of fitness etc. Anaesthesia can cause a lowering of heart rate in some dogs depending on what anaesthetic agent is used but this heart rate is fine as long as it is stable.
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 brain of a dog is important for its heart health because it allows it to pick up stimuli. The brain shifts and changes function directly effecting heart rate in dogs.
Some where in his body he has an bacterial infection
http://wiki.answers.com/Q/How_does_the_sound_of_a_dog_bark_affect_your_heart_rate"
is the dog in heat?
Many dog owners rate Nylabone products as dangerous, whilst they are supposed to help keep the dog's teeth clean, parts of the Nylabone are made of rubber with nobbles on, these nobbles can be chewed off and can be very dangerous for the dog's health as rubber is not digestible.
According to Dr Tammy Shearer in "Emergency First Aid for Your Cat", normal respiratory rate is 24 to 28 breaths per minute. NOrmal temperature is 100.5 to 102.5 degrees Fahrenheit, and normal pulse/heart rate is 110 to 140 beats per minute.
Get to the vet ASAP never wait 3 hours.
She is supposed to be reported if she is abusing his dog.
NO! Oxycodone is a potent central nervous system suppressant that will decrease your dog's heart and respiratory rate and could result in death.