Quote Originally Posted by ShneekeyTheLost View Post
Not quite...

The 'bag of Hamsters/Puppies/Rats" trick is limited to the number of critters in your bag. The chicken-infested variation has an unlimited number of squishy targets, making it a true infinite damage loop as opposed to simply an extremely large number of attacks.
So, in other words, this is the even cheesier version that any DM would be absolutely mad to allow.