It's 'cat'.

A baby one is a 'kit'.

If you say so, mysterious cat language information!

This is 'hello'.  'River'.  'Stream'.  'Prey'.  'Hunt'.  'Not'.  'I'.  'You'.  'Clan'.  'Help'.  'Sorry'.  'Trespass'.

They all stick pretty well in his memory, despite how many there are and how quick they come.

Oh, is he about to have to sorry for trespassing? Oh dear.

Here is a bunch of grammar information.

Thanks??

Yeah, that's in there too, once it switches back to vocabulary.  He gets a steady drip of mysterious cat language information for the next while.  The landscape gets a bit marshy, then swampy.

This kind of quadruped - a "cat" - does not seem to be a big fan of marshy swampy landscape. Is there a dry part to walk on.

Not in quite the direction he's been headed.  But it's not so big he can't go around.

He didn't exactly have an appointment there. Around he goes.

As the moon sets and the sun peeks up over the horizon, it becomes clear that there's a third celestial body in the sky.

Well, he already knew he wasn't on Ibyabek. Apparently there's two moons. Great big ones.

And then he's tackled from behind and pinned.

"AAAAH SORRY TRESPASSING?!"

The other quadruped pauses, and then lets him up.

"Sorry! I have no idea where I am or what's going on or why I'm a cat!"

"...Or why you're a cat?"

"I didn't use to be a cat! Have you always been a cat?"

"Yes."

"Well I haven't!"

"What were you instead?"

"I was... a... the thing that is telling me how to say words has not given me a word for it..."

"Well, what was it like."

"...taller and without any fur and with... paws that were good at things..."

"What do you know about how you came to be here."