Need advice please : Neighbor claiming Renter's Dog bit them.

[Mike Arya]

I'm a landlord for a Davenport property, and I've been served a complaint for an injury claim by a neighbor who claims that a dog owned by my property's renter bit and injured her back in April 2022.  
The defendant's name in the claim, who had the dogs during the incident is not even on the lease agreement.
I've been included in the claim as the landlord to have negligently fail to have proper rules and regulations regarding dogs on the property.
I hadn't heard anything about this April incident in 6 months until I received this complaint last week in November. Pets were included in the lease as an addendum and were noted to belong to the person who signed the lease. 
I'm looking for some advice / suggestions here from our very capable forum members who might have come across something like this. Someone appears to be in here to extract whatever they can from this incident :(  

Many thanks!