What to do emotional support animal

[James Kirby]

Hello all, 

i have a tenant that has a dog that was on a Pet Addendum. However, after a few issues with not having the dog on a leash, dog waste not being cleaned up, and the tenant against my permission putting up an outdoor dogrun and leaving the dog out barking at night (tenant complaint), I revoked the Pet Addendum. Well, said tenant now has a doctors note stating that this is an emotional support animal. 

this tenant has been served 3 days on the following:

Waste not cleaning up waste. 

Neusance dog barking all hours of the night. 

breaking lease due to putting up the dog run on property and not keeping pet on leash.  

Do I need to allow this tenant to have a Pet even after they have broken all rules and had this revoked?

Thanks in advance for your time and advice.