Important notice on the new leopard sounds.
Was testing them some more, and was occasionally getting random CTDs in battle (but usually occuring at initial contact) until I figured out the following:
On each of the wav files, open up properties, and at the bottom if it says that the computer may block them since they're from a different computer, click allow and apply.
Then go into the the three txt files (unit_ambiant, anim, idle) and remove these six sounds under each one's 'dog' category:

cat_idle4
cat_attack4
cat_snarl1
cat_snarl2
cat_snarl4
cat_snarl_attack1

These sounds aren't coded to rtw's liking apparently (strictly WAV, Channels/mono, Audio format PCM) and while it will play them, it will also choose to crash during battle, especially during initial contact.

Once gone the leopards work fine and growl and snap appropriately.