I'm not a particularly confrontational person, but neglect lights a fire under my arse. His ferret took three days to die, and you think it's defensible that he wouldn't take it to the vet ? Yeah, go you !
OK I have had animals all my life and my man and dad used to have their own pet shop and also quarantine station for importing exotic birds, my dad also used to fly racing pigeons, In my 33 years on this planet I have seen quite possibly thousands of sick animals, from the business side a vet was always called in or from the personal/pets point of view sick animals have always been t