A dog may yelp when given insulin because the injection can cause discomfort or pain at the injection site.
The dog can yelp loudly.Many of the wolves yelped as i ran away.
Most possibly from fear
Because the needle that goes in hurts
Because he doesnt like it or he is really excited ... you can tell by there faces
Bad nail, sprained wrist, bad hip, back issue. Age, type of dog, unusual physical activity. Dogs get old and arthritic just like people. Long dogs tend to have back problems, some large breeds are known for hip problems. If it lasts or the dog seems to have problems getting up or moving, it should be taken to a vet.
A dog will usually yelp if you hurt them in some way. A yelp is a sharp high pitched bark. Grunting could mean they are happy. Or it could mean they are unhappy with being picked up, read the rest of your dog's body language to tell the difference.
The dog might have a tender spot from an injury or, if it had a previous owner who abused it, the dog could be anticipating being hit and not petted.
Angry dogs tend to be distressed, thus leading it to bark or yelp.
he might have a leg problen. do see a vet quickly.
They bark, growl and yelp. They can be heard from up to one tenth of a mile, too.
The dog will yelp when he opens his mouth. Barking will be limited. Eating will be limited and yelping will occur when trying to eat.