I do know they can be ordered in court and be 'denazified' by court order ,as there was a famous case about a dog called Adolf doing the NAZI salute in public.
( wich is strictly forbidden in Germany , especially when performed in front of 10 policemen ...even when youre a dog! )
Do a quick google search at the words Nazi dog salute and you'll find plenty of articles about the whole thing .
Below theres a pic of the ole purpetrayer :-)



Police dogs are considered officers in my country , theyre full forcemembers.
I know people not like linkies , but this one is funny , its a parody on the whole affair :
TR 3/2004: Y. Satyr: Neo-Nazi Go to the Dogs!
enjoy:-)