Is anybody experienced with coydogs? i had a coyote/sheltie mix. she was wonderful. She got ill and after multiple vet visits and treatments that seemed to work she died. i know shelties can be prone to endocrine system disorders. i have read articles of ppl that have had coys that were constantly at the vet with problems and others were perfectly healthy. As i have looked back at her course of illness it seems to have been liver disease? has anybody else had any similar experiences with their coy or even sheltie?