Redwall is a huge hit in our house - both with the books and DVDs. When we first got into Redwall several years ago, I had been told there was a cartoon series about it on PBS. I looked for the VHS online (no DVDs available then). I could find no sellers in the USA & had to buy from Canada. One tape, with only a few episodes, was about $15 with shipping. We got all of them (at that time there was only season 1). My daughter wanted all of the episodes for Christmas, so I decided to go the DVD route (one DVD case takes up a lot less room than several VHS tapes) and replace all the VHS of season 1 with this DVD (actually, there are 2 discs in one case). She also got season 2 (and will get season 3 for her birthday).
You will also notice there is also available "Redwall the Movie". All that is, is season 1, edited down to an appropriate length for a movie. Sure, it may be smoother viewing w/ no breaks in between episodes - but you miss a lot that is edited out. Also, as a mother, I appreciate the shorter 20-30 minute episodes on the unedited season 1. I think you can also get the season broke up into several DVDs - but it is cheaper to purchase all of the season at once.
My daughter who is 9 now, really enjoys these episodes & watches them frequently. My son, who is now 13, has been reading the books for a few years (he devours them & rereads them frequently). He says the episodes are pretty true to the books. He did say there is the occasional added character (minor character), and some of the more gruesome scenes are edited for younger viewing. (By the way, When I say 'gruesome', I do not mean like a horror movie.)
Redwall is an excellent series to watch or to read (my daughter will read them when she gets older - the size of the books intimidate her right now). I am a very careful mother - what I mean by that is I try to screen what my children are exposed to until they have proper discernment of their own. I found nothing objectionable in this series. Yes, there is death (just like real life), & the episodes show it, but in a gentle sort of way. In a way, these Redwall series remind me of the DVD version of "Watership Down", though not quite as serious. Redwall has some humor, though I would not categorize it as a comedy.
Redwall is a GREAT series! Not mind-numbing entertainment that seems so prevalent these days, unfortunately.