This really bugs me...

[Hickory]

Okay, we all know why Redwall takes in vermin. But Salamandastron? Why did Urthstripe let Goffa and Klitch in??

[Lady Ashenwyte]

Okay, we all know why Redwall takes in vermin. But Salamandastron? Why did Urthstripe let Goffa and Klitch in??

Due to the fact that Salamandastron is also a place for travellers to stay, it's more of a military focused place.

[Hickory]

Yes... but Klitch and Goffa weren't travelers... and it's the only time in the whole series that it happens.

[Lady Ashenwyte]

I haven't read Salamandastron yet, but don't they pretend to be travellers?

[Skyblade]

I think they kind of do...

Windpaw the hare lets them in because they look "young and hungry", but she is also uneasy at the thought. Urthstripe doesn't approve of the idea but he gives them food and lets them stay one night as guests. It was probably to be at least somewhat hospitable, especially since the vermin were rather young and "needy" and were with Mara and Pikkle. But nobody in the mountain was happy about it.

[Hickory]

Nobody except Mara and possibly Pikkle.

[Skyblade]

Nobody except Mara and possibly Pikkle.

and Klitch and Goffa xD

But save those four, everyone felt uneasy when the vermin were let in, which suggests that it is not typical.

[nuncle Gabe]

Urthstripe was upset and did not think