<human>: Give me a shortened version of the text

Backstory:
I own an English Bulldog, which breathes loudly and looks intimidating. He also doesn't like new people or other dogs. Because of this, we always keep him on a tight leash, and avoid taking him around huge groups of people or dogs. 9-10 months ago a guy ran up on my dog, frightened him and made him bite the jacket of the man, which removed one of his buttons. 
Flash forward: We are now 1 month into our lease renewal, and the head of the condo/apartment building said we have to get rid of our dog or leave the apartment because this guy complained at a condo board meeting on Monday. Is this even legal, for an event that happened on the old lease that long ago? Is there any legal action I can take? Also, there have been no biting events since, and I will have to pay a large fee for vacating the apartment 1 month into the lease.
<bot>: My dog bit a guy's jacket 10 months ago, and just complained now, which is getting us kicked out of the apartment 1 month into our new lease.