I would not pay for it,what a bluddy cheek to ask.
Take it to the RSPCA ,they will treat the dog and your so called friend can give a donation.
Did you think you were poor growing up?
Only 50% of middle age adult manage more than 1 brisk 10 min walk a month.
Interference by Trump in the World Cup.
What did you you think you would have by your current age that you don't?



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