full story: My dog whose name is Slim was a rescue dog who we had since 2013 had a very bad seizure last night and even before that he was not eating his food which has never been commonplace for him so my dad got on the phone with the vet and scheduled a visit for him that was today. We muzzled Slim because he never really did well with strangers (to him at least) but he didn't care at all about the vet, even when the vet unmuzzled him to check his teeth he didn't care, Which again not commonplace for him, he would normally yell at everyone he didn't know, including my grandfather. which the vet told us that the sudden seizure could mean that he had brain cancer and it could be what might be causing his personality changes, and maybe his bad teeth could be causing him to not want to eat, and given his age my dad asked if maybe putting Slim to sleep would be in Slim's best interest, given everything that was going on with him the vet told us that it most likely would be within his best interest to do so. Then i texted my mother asked her if she thought it would be the best thing for him, she told me she wanted the best and i told her that's what the vet said is gonna be the best thing for him, so she agreed and they asked my dad if he wished to be present and he said yes, i wasn't present for it because i didn't want to see that, so i waited i the lobby until it was over.