Dogs & cats skipped indexing

Hi,

In the dogscats dataset, the filenaming system seems to have skipped some indices i.e. indexing doesn’t seem to be continuous. Any particular reason? Just curious; nothing major, for I do have 11500 cat pics and 11500 dog pics for training.

For example, I’m missing
dog.3.jpg
dog.9.jpg
dog.18.jpg
… [plus more missing dogs]
cat.2.jpg
cat.5.jpg
cat.23.jpg
… [plus more missing cats]

Thanks!