I think with the powerful final lyrics
"I will hold your head while the doctor sticks the needle in.
I'll always remember our companionship and what it meant,
And on Sunday, October the 5th you took your last breath,
and you will be missed'
and also the title: Hay Fever (a delirious fever dogs catch)
it's pretty safe to assume it is about the sad death of a dog who was very close to him - his companion
I think with the powerful final lyrics "I will hold your head while the doctor sticks the needle in. I'll always remember our companionship and what it meant, And on Sunday, October the 5th you took your last breath, and you will be missed' and also the title: Hay Fever (a delirious fever dogs catch) it's pretty safe to assume it is about the sad death of a dog who was very close to him - his companion