Siri is the main antagonist in the Rugrats and Wild Thornberrys crossover called "Rugrats Go Wild". She is a clouded leopard. She first appears when Spike pees on her tail. They have a song battle (Since Eliza can talk to animals, we hear Spike speak for the second time (first was in the dreamtime), he is voiced by Bruce Willis) in which Spike wins. However, he slips out that the Rugrats kids are all alone in woods and Siri goes looking for them. She appears again chasing them while they're going downhill in the baby carriage when a geyser goes off and washes her away.

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