Posting for my work mate.

She and her partner have two great cats and a fluffy puppy.

Billy the puppy is a pure breed Springer Spaniel bought from a registered breeder.

They adopted him at 12 weeks old and he loves them and their cats.

He has his own bed/space and spends all day with the 'daddy' as he has an outside job. Billy is rarely alone and he gets plenty of exercise.

He is now 9 months old, he completed basic puppy training and seemed happy.

Couple of days ago he started barking continually, they don't know that is wrong.

I suggested that they take him to the vets for a checkup just in case he is in pain.

But I thought I would ask the PT experts, what can they do ?