Pretty good chapter. You kinda broke the pacing abit when you decided to put the information about the Tarbosaurus name and nomenclature. The ponies wouldn't know anything about this, so you're basically explaining it for the audience's benefit.

You broke the fourth wall without invoking Pinkie Pie.

Also, what happened to Scootaloo?

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Scootaloo was sent home, Spike promised Rainbow Dash, and it would be really boring to show her going home.

"I...actually hadn't thought that far ahead." Spike mumbled out, before a throaty rumble echoed out down the street.

"I...didn't plan that far ahead."

Like brother, like sister!