How to create and print a Dictionary that has keys as the names in list and their values as number of times the name appears on the list
You don't need listA; collections.Counter does exactly what you're looking for.
import collections
data = ['Ginger', 'Willow', 'Scout', 'Roscoe', 'Bear', 'Kobe', 'Baxter', 'Zara', 'Fiona', 'Milo', 'Oakley', 'Dakota', 'Prince', 'Bruno', 'Panda', 'Dexter', 'Ziggy', 'Roscoe', 'Lucy', 'Boomer', 'Fiona', 'Ella', 'Emma', 'Oakley']
counter = collections.Counter(data)
print(counter) # Prints counter object.
counter_as_dict = dict(counter) # Can be transformed into a dictionary using dict().
print(counter_as_dict.keys()) # Prints names in dictionary.