This is so funny that you've brought this up.

I am in the last third of a fun short to promo the animals now.

Its a council meeting and the reason for it will make you laugh and all the animals and birds are VERY concerned. It has a few twists and is generally more appreciate by adults for obvious reasons but kids can enjoy its innocent front too.
Its "tongue in cheek" fun. But its beautiful and very sweet. Sgonna make you laugh/.

The animals kindof talk animatedly in that the camera shows WHO is speaking at the time simply by viewpoint but the general feel of it is "Jackanory" if anyone remembers that.
Its a storytelling mode and all the animals are my synthed voice but it works.

On the finetuning side, you COULD make an artificial jaw and flip it as a dark lower shadow-jaw for speech but its alot of work that a good storyline will win you points with anyway.
:)

You don't say which animals pack you are referring to but if it is one of the Animal World Volumes then these are not setup for the animals to talk within iClone itself.

What you can do as you have both iClone and Crazytalk is to take a close up image of the required animal head in iClone and then load that into Crazytalk. You will then be able to set it up for facial animation and get it to say anything you want.

You would then need to animate the animal in iClone and then use a video editor to cut between the full body iClone video and the talking Crazytalk video. As you are using the same animal it should look very natural in the finished movie.

I don't know if the animals have a separate texture for the head, but the idea is to animate the head texture using CrazyTalk and then apply it in iClone as a new texture that shows the talking.

Saying that, even if it will allow you to animate talking animals that doesn't help you at this moment.

https://forum.reallusion.com/Topic41418-164-1.aspx?Highlight=3dxchange