Do they? I didn't realize Tyrm had ranks in Knowledge (Nature) or in Handle Animal that would indicate he spent any time paying attention to such minor details of the world.
I would refer you back to the Game Administrivia post:
Knowledge Skills. This falls under that roleplaying of willful ignorance. While we see drug sniffing/bomb sniffing/cadaver sniffing dogs in relatively common use today, there was a time when that was not the case. Heck, weren't bloodhounds the only dogs portrayed with useful tracking skills at one time?
DnD doesn't model the real world very well at all. If it did, all of us would have ranks in many, many knowledge skills. Willful ignorance is the key. I don't expect Ayla or Felix to understand the intracacies of a pentacle unless they have studied Arcana, or perhaps the Planes. I don't expect anyone besides Oceas and in some cases Ceru, to differentiate between different types of undead. I don't expect somebody that doesn't have any ranks in Knowledge (Nature) to be able to tell the difference beyond obvious details of mundane creatures and plants.
Is that a blue spruce or a pine? Now imagine that you are a native of a rainforest in Bali and you have been transported to New Mexico, will you know the difference? Unless you have studied, probably not.
Look it's a dog. People in my village kept them as pets. some of them even trained their dogs pretty well. Of course, while some of the other kids were busy playing with their dogs, I was speaking with the town elders learning about the ways of the world. Negotiation with merchants, the art of conversation to learn more from people, and even a bit about dweomercraft and jewellry are my strengths. Who needs dogs whenyou can get people to help you in your tasks?
That's kind of the slant I could see Tyrm taking with his skill selections. He is your character though, so the perspective he takes with his skills is your call, not mine. So long as he isn't trying to act on information he wouldn't have, that's fine.
As for editing the post, I have already made my adjustments. I wouldn't worry about changing anything on your end.