Because he doesnt like it or he is really excited ... you can tell by there faces
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
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.
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.
Angry dogs tend to be distressed, thus leading it to bark or yelp.
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.
They bark, growl and yelp. They can be heard from up to one tenth of a mile, too.
he might have a leg problen. do see a vet quickly.
Yelp Inc. (YELP)had its IPO in 2012.
swimming :P