And there might be the problem. They always appear as untamed, even new ones, that I catch and put them on my farm, appear untamed. They walk around and never got stucked. The trough is in the middle of the farm, free access from all sides and there is no winter, we are at day 30.
The dogs are in room about 10x5 blocks and always get stuck at the door, maybe we should leave them walking free around, but they always go upstairs the wall and jump over the rail into the spikes and die.
So I guess we need to remove the stairs and try to let them roam around the house.
I found the *.anm files on the server and deleted them. Later when I am home, I will look in my client folder for the *.anm files and delete them, too.
PS: our rabbits and chicken eat and reproduce themself well.