Chain link dog kennels next to their mobile homes?

[Jennifer Rysdam]

I'm looking at purchasing a mobile home park and I can see in the Google images that several of the homes have chain link dog kennels/areas outside. What are your rules for things like this and pets in general?
Since I'm asking, what are all of your general rules for your parks? I own an apartment building but that is quite different. Does anyone have a lease or tenant rules and regulations document that they could share with me? Thanks!