Find an array property on an arbitrary object using reflection?

I have some generated classes which are similar in form but have no inheritance relationships, like this:

class horse {}
class horses { public horse[] horse {get;}}
class dog {}
class dogs { public dog[] dog {get;}}
class cat {}
class cats { public cat[] cat {get;}}

I want to write a method like:

ProcessAnimals<T>(Object o)
{
 find an array property of type T[]
 iterate the array
}

So then I might do:

horses horses = ...;
ProcessAnimals<horse>(horses);

It seems like something reflection can be used for but what would that look like?