Tenants' Pets for single unit rental property

[Anthony Chung]

Hello BP, 

I have single family home renting to five individuals tenants. One of them vouch for additional prospect who I will add to the lease. After reviewing her application, she mentioned her pet chihuahua. That will make two pets in my rental unit. 

I personally don't mind allowing pets as long as I get the pets deposit plus our required security was one month rent ($2145). My question for those of you who rent your single family unit is, How pets would you allow? And what are questions to ask that additional prospect about the pet?  

Thank you.