The fertilizer is all natural. I've seen dogs eat half a bag...then they needed a drink and were fine. The standards prevented is a chemical covering corn cob, after it is watered the chemical washes into the soil and is fine.
I've met a couple and the loudest they got was with sounds (trucks backing up, gunshots, alarms, etc) Although I did meet one that if you got near his cage he would growl and loudly click his tongue at you. But nothing near the scream of a sun conure or macaw!!!