# 7.2.1 Add a 'cow' to the list
list1.append('cow')
list1

# 7.2.2 Add 'chicken' and 'pig'
list1.extend(['chicken', 'pig'])
list1

# 7.2.3 Remove the 'dog'
list1.remove('dog')
list1

# 7.2.4 Remove and return the cat
foo = list1.pop()
print("foo is: " + foo)
list1
