I just received National Humane Review in the mail; it is put out by American Humane.

It contains two articles about animals in movies. They have Certified Animal Safety Representatives who go on site during movie making.

Snow Buddies had a lot of problems. Six pups died, and one breeder was formally charged with falsifying health certificiates. I couldn't find the article on line except in a pdf file.
http://www.americanhumane.org/site/P..._humane_review

Evan Almighty gets a high rating for the animals' care during filming.
http://www.americanhumane.org/site/P...lm_review_evan


Their Film Unit also gives info on 6 more movies:
I Now Pronounce you Chuck and larry
License to Wed
Harry Potter -- Phoenix
Transformers
Evening
Hairspray

I haven't looked at all of those; thought some here may be interested.

http://www.americanhumane.org/site/P...gename=pa_film