diff --git a/Cat/routes/cats.js b/Cat/routes/cats.js
index 5fe941a0..99aa95f2 100644
--- a/Cat/routes/cats.js
+++ b/Cat/routes/cats.js
@@ -4,11 +4,12 @@ var mongoose = require('mongoose');
 var cats = {};
 
 var catdb = require('../models/catmodel.js');
+// It's convention to call your imported cat model "Cat" -- just so you're aware
 
 
 var color = ["black", "white", "ginger", "grey", "olive"];
 var name = ['a','b','c','d','e','f','g','h','i','j','k','l',
-	'm','n','o','p','q','r','s','t','u','v','w','x','y','z']
+	'm','n','o','p','q','r','s','t','u','v','w','x','y','z'];
 
 
 
@@ -21,78 +22,90 @@ cats.newcats = function(req, res){
     age: age,
     color: ccolor, 
   });
-
+  // Something for you to think about: how could you have modularized new cat generation?
 
   newdata.save(function (err) {
-  if (err) {
-    console.log("Problem saving new cat", err);
-  }
-  res.render("cats", {
+    if (err) {
+      console.log("Problem saving new cat", err);
+    } else {
+      /*
+      If you don't put the "res.render" in an "else" block, you'll be rendering
+      the cat you created even if there's an error saving it! Not good.
+      Later we'll talk a little more about good error handling -- you should really
+      be sending a response in the error case too, something like:
+        res.status(500).send('Problem saving new cat');
+      */
+      res.render("cats", {
         message: "Cat Created:",
         name: cname,
         age: age,
         color: ccolor,
       });
-  })
+    }
+  });
 };
 
 cats.listcats = function(req, res){
   var catlist = [];
   catdb.find(function (err, catlist) {
-  if (err) return console.error(err);
+    // Comparing to the new cat route -- in this case you're *returning* the error,
+    // which is why the rest of your function doesn't need to be in an else block. This works!
+    if (err) return console.error(err);
     catlist = catlist.sort(function(a,b){
-    return parseFloat(a.age) - parseFloat(b.age);
-  })
-      res.render("catlist", {
-        message: "All Cats",
-        cats:catlist
-      });
-  })
-
-
+      return parseFloat(a.age) - parseFloat(b.age); // nice use of the compare function!
+    }); 
+    res.render("catlist", {
+      message: "All Cats",
+      cats: catlist
+    });
+  });
 };
+// The spacing in your listcats route really confused me -- it looked like the res.render
+// was outside of the callback, and you actually had it inside the callback, in the right place.
+// This is why conventional spacing is important! Usually functions or if statements are at the same
+// indent level as their end brackets or parentheses.
 
 
-cats.catcolor = function(req, res){
-  
+cats.catcolor = function(req, res) {
+  // You said you weren't sure about this route, and it looks great to me :)
   catdb.find(function (err, catlist) {
-  var color = req.params.color.toLowerCase();
-  var newlist = []
-  if (err) return console.error(err);
+    if (err) return console.error(err); // I would do this first!
+
+    var color = req.params.color.toLowerCase();
+    var newlist = [];
   
-  for (var i = 0; i < catlist.length; i++) {
-    if (catlist[i].color === color) {
-      console.log(catlist[i])
-      newlist.push(catlist[i])
-    };
-  }; 
-
-      res.render("catlist", {
-        message: "Cats",
-        cats:newlist
-      });
-  })
+    for (var i = 0; i < catlist.length; i++) {
+      if (catlist[i].color === color) {
+        newlist.push(catlist[i])
+      };
+    }; 
+    // check out the "filter" method built into arrays -- here's an example
+    // http://adripofjavascript.com/blog/drips/filtering-arrays-with-array-filter.html
+
+    res.render("catlist", {
+      message: "Cats",
+      cats: newlist
+    });
+  });
 };
 
 
 cats.catage = function(req, res){
-  
   catdb.find(function (err, catlist) {
-  var newlist = []
-  if (err) return console.error(err);
-  
-  for (var i = 0; i < catlist.length; i++) {
-    if (catlist[i].age < 10 && catlist[i].age > 5) {
-      console.log(catlist[i])
-      newlist.push(catlist[i])
-    };
-  }; 
-
-      res.render("catlist", {
-        message: "Young Cats (5-10 years old)",
-        cats:newlist
-      });
-  })
+    var newlist = [];
+    if (err) return console.error(err);
+    
+    for (var i = 0; i < catlist.length; i++) {
+      if (catlist[i].age < 10 && catlist[i].age > 5) {
+        newlist.push(catlist[i])
+      };
+    }; // Again, this is a great place to use the built in "filter" method
+
+    res.render("catlist", {
+      message: "Young Cats (5-10 years old)",
+      cats:newlist
+    });
+  });
 };