I am gonna agree with what DrLex mentioned, the end of the tail appears to have come loose from the bed causing the print to fail.
What happened to my two prints, the print head shifted and began printing over half air and half print. This occurred around 3/4 of the prints completion, and also happened at the exact same spot on both prints. Before printing the second one I had even looked at the layers, nothing seemed out of the norm. I have S3D now, but have yet to try and slice it in there to print.
I dont think it is a file problem, either Cura didnt convert the model properly, or my printer didnt read them properly.