
Only in a pup I bred 6 years ago.
Five years ago the owner got her spayed and queried with me as to when she would feel better as she was very tired and not herself. This rang alarm bells as spaying should have had little or no effect on her general bounciness and stamina which appeared to be zero.
She had Strongylus heart/lungworm which she had picked up from eating snails. They are in the Home counties where it was getting a hold according to her vets.
It would seem that this parasite has spread around the country.
The treatment was Panacur given daily over a week, and then every month.