Some maybe think itīs funny, like Tinkeyaīs mum, but I donīt think itīs funny.... you need to work with your dogs... When we took Grienden, he was very nervous, and wanted to chew something all the time, but we worked on him very hard, and now heīs exellent dog....I know that great danes are harder to work...I hope you did know about them all, when you took you baby, huh?