Copious dogs is currently in early alpha. This means that there probably are a lot of bugs and some things hasn't been implemented yet.
Downloads :) Edit
The current version of copious dogs is: Alpha 1.1.1 for minecraft 1.6.3.
This can be downloaded from mediafire .
Here is a list of older versions of copious dogs:
Alpha 1.7.2: Download
Alpha 1.7.10: Download