Phineas and Ferb (2007)

S2E10 Perry Lays an Egg

After wrapping up their project earlier than expected, Phineas and Ferb mistakenly believe they’ve found an egg belonging to Perry. Eager to add a new member to their family, they put their inventive skills to work to help it hatch. However, Candace has her own agenda, inspired by a nature documentary, and sets out to persuade the boys that the hatchling needs a genuine mother. Meanwhile, Doofenshmirtz is busy trying to prove to Perry that his latest plot is truly villainous.