- In the movie, the poodle turns on the speaker after the owner leaves home, and the best-selling song is "bounce" from System of a Down.
- The main characters of Gidget are based on Louis C.K and talk show host Alan De Janice. The former dubbed Max in this cartoon.
- "The Secret Life of Pets" was originally scheduled for the spring 2016 file (released on February 12), but it was postponed to the summer file.
- In the film, Chloe tells Papus that she is a cat, but the other party calmly replied, "There is no perfect Nobody's perfect". These two lines of dialogue come from "A Passionate Fire", in which Jack Lemmon, the female woman in the film, tells a rich man that he is actually a man, and the latter answers her in this way.
- "The Secret of Pets" was created by the team of "Despicable Me". The film also contains many easter eggs related to the previous work, such as the dolls of the minions, which appeared in "Despicable Me" on the TV of the cat family Newscasters who have appeared.
- The well-known TV personality Seth Myers and his pet dog Frisbee starred in a car commercial and used it to promote the film "The Secret Life of Pets".
The Secret Life of Pets behind the scenes gags
The Secret Life of Pets quotes
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Snowball: Welcome my dogs! Oh, you guys look weird. Hurry up, come on in.
Buddy: You said it was a costume party!
Mel: Why do you listen to me?
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Tiberius: Okay. He's too stupid to talk and too ugly to eat.
Gidget: [screams and tackles Ozone to the ground] I'm done playing nice! Where is Max?
Ozone: What? I-I...
Gidget: [Gidget slaps Ozone] Tell me!
[slaps him again]
Ozone: Well I... I can't.
[gets slapped again]
Ozone: Let me finish.
[and slapped again]
Ozone: Ow! Help me!
[and slapped again]
Gidget: Don't look at him!
[slaps Ozone again]
Gidget: Look at me! Nobody can help you! Where is *Max*?