harry potter - Was Scabbers in Ron's pocket during the Christmas feast in the 3rd book?

I just thought of something that I had never considered before in Harry Potter (actually it was my wife's idea, so if you find this interesting I give her full credit).

Was Scabbers in Ron's pocket during the Christmas feast in the 3rd book? If so, then 13 were dining together when Trelawney entered the room and Dumbledore rose to greet her, and thus she foreshadowed his death three books ahead of time.

This is the case, because Trelawney of course says (I'll paraphrase, because I don't have the book on me) "When thirteen dine, the first to rise is the first to die". Trelawney said this, because she thought that only twelve were dining at her arrival and didn't want to make the total thirteen. However, if Pettigrew were there then thirteen would have already been at the dining table when Dumbledore rose to greet her.

I think this is plausible and interesting because actually, quite a few things that Trelawney says comes true in the books even if it's not how the reader would expect. Except for her ridiculous things she predicts about Harry's death every class, she says almost entirely true predictions.

For example, she predicts correctly twice with her cards in the sixth book, once with Harry hiding behind a statue of armor, once with the lightning struck tower. Not to mention the several at the beginning of the third book that spooks the students.

Rowling also uses "fake" divination to foreshadow events. For instance, Harry and Ron's dream diary starts off foreshadowing the three Triwizard tasks. I thought this might have been another one of those times that I didn't pick up on before.

Since Ron carries Scabbers around most of the time, I figured it was likely. Is there any evidence in the book(s) about this?

Answer

There's no direct confirmation in the books, and I haven't been able to find an interview where Rowling confirms one way or the other.

You could make a decent case either way, but I'd be inclined to suggest he probably was in Ron's pocket.

The important piece of information is that there had been an altercation with Crookshanks earlier that morning:

[B]efore Hermione could answer, Crookshanks sprang from Seamus’s bed, right at Ron's chest.

"GET — HIM — OUT — OF — HERE!" Ron bellowed as Crookshanks's claws ripped his pajamas and Scabbers attempted a wild escape over his shoulder. Ron seized Scabbers by the tail and aimed a misjudged kick at Crookshanks that hit the trunk at the end of Harry’s bed, knocking it over and causing Ron to hop up and down, howling with pain.

[...]

Christmas spirit was definitely thin on the ground in the Gryffindor common room that morning. Hermione had shut Crookshanks in her dormitory, but was furious with Ron for trying to kick him; Ron was still fuming about Crookshanks’s fresh attempt to eat Scabbers.

[...]

At lunchtime they went down to the Great Hall, to find that the House tables had been moved against the walls again, and that a single table, set for twelve, stood in the middle of the room.

^{Harry Potter and the Prisoner of Azkaban Chapter 11: "The Firebolt"}

Since Crookshanks is locked in the dormitory at this point, it's possible Ron judged it safe enough to leave Scabbers behind; we know from earlier in the chapter that Ron does, on occasion, do this:

"How's Scabbers?" Hermione asked timidly as they stripped fat pink pods from the plants and emptied the shining beans into a wooden pail.

"He's hiding at the bottom of my bed, shaking," said Ron angrily, missing the pail and scattering beans over the greenhouse floor.

^{Harry Potter and the Prisoner of Azkaban Chapter 8: "Flight of the Fat Lady"}

For my money, though, it seems unlikely that Ron would let the rat out of his sight mere hours after an attack.

Of course, that's just my headcanon; it could go either way.