3 times monthly rent is a good standard to set rules by and in our lease we specify a 35 pound limit on animals.  

As for the pet deposit,  call it a "pet/animal fee" (non refundable). 

Hi Michael,Obviously they've chosen to keep the dog and move somewhere where they won't be thrown out.Some people will get rid of an animal, some will move instead.Good Luck!

Perhaps, perhaps not, but apartments and mobile homes are different animals.

Having Pet policies instead of Animal policies in this age of ESAs and comfort/therapy animals. 

When you say "other agents tell you to get your own", well yes of course they do -- if I was an agent, I'd also probably want to deal mainly with agents, because dealing with another professional makes the deal go quicker and smoother with less headache for you. 

Originally posted by @John Underwood:The best advice I have received on a emotional support animal is to make your tenant go to petscreening.com to validate the real need for the animal.I also use petscreening.com for all my animals.

But learning along the way made things a lot smoother.

The leases are clear about animals of all kinds and we have not had any problems.

Animal fees (if you have any!)