These are different animals. 

Also, in the lease under pets, they don't charge a pet deposit, just a clause that says "A reasonable number of pets or animals are allowed to be kept in or about the property.  

Do you have any friends or family, that given a choice, wouldn't rent to a gay or transgender person, an unmarried couple, a single mother, a Muslim, a person with disability requiring a service animal, a person with only SSDI income?  

If you know what you are doing, go build, if not, maybe try to build a single family first before you tackle that animal.

I never, ever require a tenant to be there unless there's animals present, I would prefer they not be there as they can usually do a good job of hindering the repairs going on.Most repair guys will do work after hours if you pay them more, which is a very real possibility with you working a full time job and needing to develop a relationship with them to do the repairs right. 

But, you don't have to allow a service animal, if having that animal would cause a financial hardship. 

Special consideration is given to “Service Animals” that assist a tenant with special medical needs.

I used to own a service dog and they are wonderful animals.  

Things like an Animal Addendum apply to only some tenants.As far as multi-defaulting tenants, the Alabama law changed in 2014 and now allows you to kick out a multi-defaulting tenant.

Be very careful with dealing with service animals.