It must to great doing a job that you love, not everyone has that opporunity. Dog walking has been popular in UK for quite a few years already to the extent I think there have been talks of regulations like how many dogs you can walk at the same time. I think that was due to some dog walkers walking too many dogs and of different breeds making it dangerours to the public and the dogs. Anyway, it will be interesting to see how the dog walking industry develops in Germany