Love me, love my dog – that's what humans say. Snoopadoop tends to take it quite literally, but then she's fiercely protective of her owner, and for a good reason.
Carolyn may act as if she despises all her fellow human beings, but that's actually her way to protect herself from hurt and disappointment. Arthur knows that, and Snoopadoop is always grateful to have him around.
When that Herc fellow starts showing up more and more often, Snoopadoop decides to ascertain his true intentions. It's only when he passes the test that Snoopadoop allows him to get closer to her owner.
