This is a question for those that have had both, as I want an accurate comparison of the two.
I'm torn between the two for my rats.
The CN seems like the obvious choice, as it has horizontal bars and smaller spacing, but I've heard many things of how unstable it is compared to the FN. Also, I've heard it's easier for urine (aka smells) to get trapped in the CN, because it isn't as tightly put together as a FN, which requires tools.
For those of you with FN:
Are the rats able to climb the bars, despite them being vertical?
Is the bar spacing an issue?
At what age is it safe for a rat to be in a FN?
I have two (soon the be three) boys which are old enough to be in a FN, but later on, we plan on getting a couple of young rats when the boys are older.
Thank you to everyone! I appreciate it!