I just realized, if Spike hatched later in the first film, then he'd be about five years younger than the others. Which means he'd only be a few months older, likely, at the very MOST, than Chomper.
All these years, I kept thinking that Spike was their age. Guess he will get married 5 years EARLY in my fanfic now.
I'd always been portraying him as the same age as the kids. On the flip side, if he's five years younger, maybe that might explain why he wasn't talking so much for a long time!
I mean, assuming the others didn't talk, minus Chomper (who can say "yes" and "no" basically right after he hatches), didn't start to be able to talk till they were 2, then Spike shouldn't start talking till the others were seven, which some think is around the time of the fourth film, when he DOES talk!
Also, Spike's immature habit of eating food at bad times also would be explained if he's five years younger than the others. Also, perhaps he was a bit shy as he is the only one in the Gang of Five to have NO family. (Littlefoot still had his father and grandparents and his third cousin Ali and her mother, Ducky has, as far as we know, ALL of her family, Petrie still has his mother, his uncle, and, presumably, all of his siblings, Cera has her dad still and got a new stepmom and step sister and had to have an older sibling, who gave her Dana and Dinah as nieces. Ruby appears to have all of her family. Chomper has his parents. Spike, he's got NOBODY. I mean, that has to bother him that all of his friends have family and he doesn't have anyone. I'll bet he'd be LOOKING for a girlfriend at a younger age than his pals just so he could say he had another Spiketail family: his own.)
Anyway, now I'm going to have to edit my fanfic to end about 6 or 7 years after the Gang comes of age so that Spike can have talking kids too! (I was clever enough to deal the Chomper age gap by saying that Sharpteeth came of age 5 years earlier than Leaf Eaters and that Bothteeth like Ruby came of age 3 years earlier than Leaf Eaters. However, now I have a Spike problem. Perhaps he can get married early. It happens. My grandparents got married when my Grandma was 16.)