Wilfred hates going to the vet. We learn this about him on the episode "Trust," as teased here.
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Wilfred is not your typical comedy. Get your first look at this new FX series, starring Elijah Wood, now.
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Wilfred Quotes

Shame is like having a daughter with red hair and freckles; you cannot let it become part of your life.

Wilfred

Ryan: I thought it would make me sound Effete.
Wilfred: So does saying the word "effete."