Listing Rent in Lease Agreement

[Martin Kimmel]

I am a new landlord about to have my first lease signed. I'm wondering about listing rent in my lease agreement. We have agreed on $1400 plus $20 x 2 for their two pets so $1440 total. In the agreement do I state that amount or do I state $1400 and have the additional fees covered under the attached pet addendum? I'm no lawyer but to me it reads that I should state $1440 in the actual lease because it says "Rent and additional fees are collectively referred to as "RENT"." 

What happens if the tenant get's rid of a pet for whatever reason? Do we need to sign some sort of amendment to the lease where I state the lease is being reduced by $20?

Any other advice for a new landlord going though the lease process for the first time as a lessor?

Thanks,

Marty