A possible concise summary is:
A father tries to sell his son's pet dinosaur to a black market animal dealer, but gets scammed with monopoly money. A pet detective arrives and accuses the father of selling the dinosaur, but the dinosaur returns after escaping and eating the dealer. The father promises to never sell the dinosaur again. The pet detective makes many references to Ace Ventura movies.
Here are some possible facts extracted from the text:
1. Jeffy wrote a song based on the wheels on the bus.
2. Mario got a call from a black market animal dealer who offered to buy his pet dinosaur.
3. Mario agreed to sell the dinosaur under a street light, but he got scammed with monopoly money.
4. Mario hired a pet detective to find the dinosaur, but he was useless and only made movie references.
5. The dinosaur returned by itself after eating the dolphin who stole it.