I know your pain... I've lost a few furry friends through various health issues, including cancer, in the last five years. The best thing you can do is be there for them and see them through it 'til the end.
(https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/a2e03e8a-33a8-47e2-a3e5-0c592d110fba/ddwelu3-13b65b08-890a-4fb4-b46c-91a0de5505da.jpg/v1/fill/w_1280,h_1133,q_75,strp/one_week_later______2__by_haggismccrablice_ddwelu3-fullview.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7ImhlaWdodCI6Ijw9MTEzMyIsInBhdGgiOiJcL2ZcL2EyZTAzZThhLTMzYTgtNDdlMi1hM2U1LTBjNTkyZDExMGZiYVwvZGR3ZWx1My0xM2I2NWIwOC04OTBhLTRmYjQtYjQ2Yy05MWEwZGU1NTA1ZGEuanBnIiwid2lkdGgiOiI8PTEyODAifV1dLCJhdWQiOlsidXJuOnNlcnZpY2U6aW1hZ2Uub3BlcmF0aW9ucyJdfQ.EbxvHEydpXKZ5WKaIEcgcczw3GgqZPgdsdAih-qi-LM)