31. At full capacity, eight tourists a day could visit each of the three separate gorilla families habituated to human visits. 32. Conversely in Mauritania, crocodiles appear to be habituated to the local people, who swim with them without being attacked. 33. Dopamine has been known to decrease latent inhibition, which causes a decrease in the ability to habituate to different stimuli. 34. Additionally, this stage consists of teaching them how to appropriately react and habituate to environmental changes in preparation for adulthood. 35. If infants have actually learned the words, the mismatch should cause them to be no longer habituated to the pairings. 36. Prairie dogs living near the pullouts have become so habituated to humans that one can approach to within two or three feet. 37. The seals, therefore, are capable of habituating to the calls of harmless predators, in this case harmless killer whales. 38. A pet iguana habituates to humans to such a degree that humans no longer cause a " fight or flight " reaction. 39. In some areas, this species has become habituated to being fed worms, and in exchange can be watched by birdwatchers. 40. Moreover, the animals have become so habituated to humans and their vehicles that it is a lot easier to approach and observe.