For yourself, maybe, for your pets, absolutely not. Cats are strict carnivores[1], and dogs, while they can survive on a veg diet, it is not what they evolved to consume[2].
Your friends are literally killing their pets. Please either inform them and make sure they stop it, or inform the local humane society/animal shelter and get them taken away.
Noondip's now deleted comment was as follows:
Another excellent reason to go vegan, both for yourself and your pets. I'm not an authority on this, but my friends have bragged about their cats and dogs alike living a healthy, happy life on a plant-based diet.
[1]: http://www.petmd.com/cat/nutrition/evr_ct_cat_nutritional_ne...
[2]: http://rawfed.com/myths/omnivores.html
Your friends are literally killing their pets. Please either inform them and make sure they stop it, or inform the local humane society/animal shelter and get them taken away.
Noondip's now deleted comment was as follows:
Another excellent reason to go vegan, both for yourself and your pets. I'm not an authority on this, but my friends have bragged about their cats and dogs alike living a healthy, happy life on a plant-based diet.