They even complained on one that the local chipmunks and squirrels had eaten their plants in the garden (complete with photos of chewed plants) - and the remedy they sought for each of these filings was termination of the lease.

As much as I like pets myself, I know how cats can go around peeing on things to mark their territory,  and how bad that smells, and how dogs can chew or claw trim, and have accidents too, and what an odor pets create when they aren't well groomed.

Labs are puppies until they're about 3 years old, and they chew on everything.  

@Eddy Dumire any breed of dog can be violent, it really all depends on how the owner takes care of them and trains them. if your concerned about the potential damage from pets, you can do one or a combination of these:1. charge an additional deposit to allow the pet (along with security deposit)2. charge a slightly higher rent (ex. additional $30/mo )3. only allow pets under a certain weight4. don't allow pets at allI'd typically lean more toward no pets at all, but I've made exceptions in cases where the flooring was at a point where I was debating on replacing or not. you also need to pay attention to people with pets as some will scratch or chew on doors, walls, cabinets, and other things. this goes beyond just dogs and cats too, so I'd at the very least take a deposit for any pet. 

cats and dogs can scratch and chew so a portion of the deposit is non refundable. 

Plus, they chew on everything, and can wreck something so quickly, while you are distracted doing something else.I've raised puppies, too.  

I was more than happy to have her come see my un-chewed, un-destroyed house and meet my big lazy dog. 

Any dog can pee or chew but bigger dogs means bigger damage.

People think of big dogs chewing things up and digging holes, but they're more likely to eat the couch, where a small dog is more likely to piddle everywhere and scratch up doors.Just some food for thought.

For instance if there is a broken/scratched/chewed molding, setup a time to have it repaired, replaced or fixed.