Hi All,took Zak to his new vet today to have this thyroid problem checked out,what a surprise when I arrived I was greeted by two luvverly young french lady vets( I didnt know honest ) anyway gave him a very thorough check over listened to what I had to say and told me they are almost certain that the problem with his tail and sores on his nuts are caused by having an enlarged prostate gland they took there time to explain everthing and suggested having him castrated,when I told them I wasnt keen on this due to his age they suggested that he has an implant its similar to a microchip and works for 6 months and I should start to see results in about 3 weeks so its back to vets thursday for the implant and looking foward to a nice thick bushy tail again. Bill & Zak.