I have some quick diet questions as a new owner: What is the verdict on spinach? I've always lumped it in with other greens and figured it's pretty healthy, but I noticed when others have been talking about leafy greens here they haven't mentioned it, and one place said to be cautious with it. Is okay to feed spinach? Also, a question about lab blocks. I am using Mazuri now since that is what was recommended to me and is the only one available in stores near me, but I'd like to switch to Harlan Teklad since it seems to be more nutritious, highly rated, and not as expensive as Oxbow. I've found it on Amazon, but am a little confused. I've read here that protein shouldn't be over 10%, but both the Harlan Teklad blocks I've found for rats are. One is Envigo (Formerly Harlan) Teklad Global Rat Food Pellets 2018 and the other is Envigo (Formerly Harlan) Teklad Global Rat Food Pellets 2014, which are 18% and 14% protein, respectively. Is there another Harlan/Envigo Teklad that I am missing, or is this higher protein okay since they have specifically formulated it for rats?