I bought dogmore for my dog and didn't even check k the expiry date,after eating them my dog suddenly had a very terrible stomach cramps

I bought dogmore for my dog and didn't even check k the expiry date,after eating them my dog suddenly had a very terrible stomach cramps. Today I got a call while at work that my dog had died.im checking the dog more now and it doesn't have visibility on the expiry date [file=28136_fef97b596ae***4e1ec884ac6ba6__https://s3-eu-west-1.amazonaws.com/pslbs/lhc-files/c897-user-files/c873d23249f67864bdab9e4da***.jpeg?X-Amz-Content-Sha256=UNSIGNED-PAYLOADandX-Amz-Algorithm=AWS4-HMAC-SHA256andX-Amz-Credential=AKIA5DGWZC5MLFWEG3MCpercent2F***6percent2Feu-west-1percent2Fs3percent2Faws4_requestandX-Amz-Date=***6T172152ZandX-Amz-SignedHeaders=hostandX-Amz-Expires=1200andX-Amz-Signature=5f27bc8e57c***ff4cb9b12f18aba80c474edd6efbed7db0d5f3339c705f link=http://hellopeter.kobliat.com/dialog/download/28136]