Yes, indeed, there are both plants and animals that are doing better because of human activity. Examples of urban wildlife abound; for example, in both Africa and India, different species of monkeys have adapted to city life very well. In the western United States coyotes have become a common sight in both cities and suburbs; while they typically feed on trash, they also have been known to hunt for pet cats and small dogs.Other smaller animals that scavenge for trash, such as skunks and opossums, are also found in increasing numbers in many cities.
While cities have supported pigeon populations for centuries, in some areas birds of prey such as falcons and kestrels are now appearing there as well, apparently drawn to flocks of pigeons, which represent easy prey.
Cities have also created opportunities for a variety of species of non-native invasive plants. Invasive plants are typically hardy, pioneer-type species, and the lack of herbivores and competitors found in most urban environments have allowed a variety of invasive plants to flourish.