Gosh, that is awful!

I would be exactly the same as you, not wanting to say anything to upset them but I would be worried sick.

I agree with ad_1980, I would offer to check on the pup yourself, not that it's your job but at least it would put your mind at rest.

I also agree with peppa pug, if this continues then you may have no other choice to contact the RSPCA

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Holly, my precious girl waiting at Rainbow Bridge... You were my everything, rest in peace my beautiful angel xxx