diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 951467e70..a15c9f762 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -3230,7 +3230,7 @@
       var n = 0,
           length = array.length;
 
-      if (typeof callback == 'function') {
+      if (typeof callback != 'number' && callback != null) {
         var index = -1;
         callback = createCallback(callback, thisArg);
         while (++index < length && callback(array[index], index, array)) {
@@ -3386,7 +3386,7 @@
     var n = 0,
         length = array.length;
 
-    if (typeof callback == 'function') {
+    if (typeof callback != 'number' && callback != null) {
       var index = length;
       callback = createCallback(callback, thisArg);
       while (index-- && callback(array[index], index, array)) {
@@ -3508,7 +3508,7 @@
       var n = 0,
           length = array.length;
 
-      if (typeof callback == 'function') {
+      if (typeof callback != 'number' && callback != null) {
         var index = length;
         callback = createCallback(callback, thisArg);
         while (index-- && callback(array[index], index, array)) {
@@ -3696,7 +3696,7 @@
    * // => [{ 'name': 'beet', 'type': 'vegetable' }]
    */
   function rest(array, callback, thisArg) {
-    if (typeof callback == 'function') {
+    if (typeof callback != 'number' && callback != null) {
       var n = 0,
           index = -1,
           length = array ? array.length : 0;
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index f5432a39c..7eea5bd67 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
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diff --git a/dist/lodash.js b/dist/lodash.js
index 9cb742f0e..95fc9d918 100644
--- a/dist/lodash.js
+++ b/dist/lodash.js
@@ -3080,7 +3080,7 @@
       var n = 0,
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+      if (typeof callback != 'number' && callback != null) {
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@@ -3236,7 +3236,7 @@
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diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index 2e3dfe05a..f2c1cb01a 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -2581,7 +2581,7 @@
       var n = 0,
           length = array.length;
 
-      if (typeof callback == 'function') {
+      if (typeof callback != 'number' && callback != null) {
         var index = -1;
         callback = createCallback(callback, thisArg);
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@@ -2737,7 +2737,7 @@
     var n = 0,
         length = array.length;
 
-    if (typeof callback == 'function') {
+    if (typeof callback != 'number' && callback != null) {
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       callback = createCallback(callback, thisArg);
       while (index-- && callback(array[index], index, array)) {
@@ -2847,7 +2847,7 @@
       var n = 0,
           length = array.length;
 
-      if (typeof callback == 'function') {
+      if (typeof callback != 'number' && callback != null) {
         var index = length;
         callback = createCallback(callback, thisArg);
         while (index-- && callback(array[index], index, array)) {
@@ -3035,7 +3035,7 @@
    * // => [{ 'name': 'beet', 'type': 'vegetable' }]
    */
   function rest(array, callback, thisArg) {
-    if (typeof callback == 'function') {
+    if (typeof callback != 'number' && callback != null) {
       var n = 0,
           index = -1,
           length = array ? array.length : 0;
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index 8788d9213..685478cc2 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -4,31 +4,31 @@
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diff --git a/lodash.js b/lodash.js
index 5b3d6585c..05ada1a9e 100644
--- a/lodash.js
+++ b/lodash.js
@@ -3237,7 +3237,7 @@
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     var n = 0,
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+    if (typeof callback != 'number' && callback != null) {
       var index = length;
       callback = createCallback(callback, thisArg);
       while (index-- && callback(array[index], index, array)) {
@@ -3515,7 +3515,7 @@
       var n = 0,
           length = array.length;
 
-      if (typeof callback == 'function') {
+      if (typeof callback != 'number' && callback != null) {
         var index = length;
         callback = createCallback(callback, thisArg);
         while (index-- && callback(array[index], index, array)) {
@@ -3703,7 +3703,7 @@
    * // => [{ 'name': 'beet', 'type': 'vegetable' }]
    */
   function rest(array, callback, thisArg) {
-    if (typeof callback == 'function') {
+    if (typeof callback != 'number' && callback != null) {
       var n = 0,
           index = -1,
           length = array ? array.length : 0;
diff --git a/test/test.js b/test/test.js
index baf0b82ff..6bbb59266 100644
--- a/test/test.js
+++ b/test/test.js
@@ -674,21 +674,26 @@
   QUnit.module('lodash.find');
 
   (function() {
-    var array = [
-      { 'a': 1, 'b': 2, 'c': 3 },
-      { 'a': 2, 'b': 2, 'c': 3 }
+    var objects = [
+      { 'a': 0, 'b': 0 },
+      { 'a': 1, 'b': 1 },
+      { 'a': 2, 'b': 2 }
     ];
 
     test('should return found `value`', function() {
-      equal(_.find(array, function(object) { return object.a == 1; }), array[0]);
+      equal(_.find(objects, function(object) { return object.a == 1; }), objects[1]);
     });
 
     test('should return `undefined` if `value` is not found', function() {
-      equal(_.find(array, function(object) { return object.a == 3; }), undefined);
+      equal(_.find(objects, function(object) { return object.a == 3; }), undefined);
     });
 
     test('should work with an object for `callback`', function() {
-      equal(_.find(array, { 'b': 2, 'c': 3 }), array[0]);
+      equal(_.find(objects, { 'b': 2 }), objects[2]);
+    });
+
+    test('should work with a string for `callback`', function() {
+      equal(_.find(objects, 'b'), objects[1]);
     });
   }());
 
@@ -699,6 +704,12 @@
   (function() {
     var array = [1, 2, 3];
 
+    var objects = [
+      { 'a': 2, 'b': 2 },
+      { 'a': 1, 'b': 1 },
+      { 'a': 0, 'b': 0 }
+    ];
+
     test('should return the first element', function() {
       strictEqual(_.first(array), 1);
     });
@@ -755,6 +766,14 @@
       var actual = _(array).first();
       strictEqual(actual, 1);
     });
+
+    test('should work with an object for `callback`', function() {
+      deepEqual(_.first(objects, { 'b': 2 }), objects.slice(0, 1));
+    });
+
+    test('should work with a string for `callback`', function() {
+      deepEqual(_.first(objects, 'b'), objects.slice(0, 2));
+    });
   }());
 
   /*--------------------------------------------------------------------------*/
@@ -965,6 +984,12 @@
   (function() {
     var array = [1, 2, 3];
 
+    var objects = [
+      { 'a': 0, 'b': 0 },
+      { 'a': 1, 'b': 1 },
+      { 'a': 2, 'b': 2 }
+    ];
+
     test('returns all elements for `n` of `0`', function() {
       deepEqual(_.initial(array, 0), [1, 2, 3]);
     });
@@ -1011,6 +1036,14 @@
 
       deepEqual(actual, [1]);
     });
+
+    test('should work with an object for `callback`', function() {
+      deepEqual(_.initial(objects, { 'b': 2 }), objects.slice(0, 2));
+    });
+
+    test('should work with a string for `callback`', function() {
+      deepEqual(_.initial(objects, 'b'), objects.slice(0, 1));
+    });
   }());
 
   /*--------------------------------------------------------------------------*/
@@ -1306,6 +1339,12 @@
   (function() {
     var array = [1, 2, 3];
 
+    var objects = [
+      { 'a': 0, 'b': 0 },
+      { 'a': 1, 'b': 1 },
+      { 'a': 2, 'b': 2 }
+    ];
+
     test('should return the last element', function() {
       equal(_.last(array), 3);
     });
@@ -1362,6 +1401,14 @@
       var actual = _(array).last();
       equal(actual, 3);
     });
+
+    test('should work with an object for `callback`', function() {
+      deepEqual(_.last(objects, { 'b': 2 }), objects.slice(-1));
+    });
+
+    test('should work with a string for `callback`', function() {
+      deepEqual(_.last(objects, 'b'), objects.slice(-2));
+    });
   }());
 
   /*--------------------------------------------------------------------------*/
@@ -1927,6 +1974,12 @@
   (function() {
     var array = [1, 2, 3];
 
+    var objects = [
+      { 'a': 2, 'b': 2 },
+      { 'a': 1, 'b': 1 },
+      { 'a': 0, 'b': 0 }
+    ];
+
     test('returns all elements for `n` of `0`', function() {
       deepEqual(_.rest(array, 0), [1, 2, 3]);
     });
@@ -1973,6 +2026,14 @@
 
       deepEqual(actual, [3]);
     });
+
+    test('should work with an object for `callback`', function() {
+      deepEqual(_.rest(objects, { 'b': 2 }), objects.slice(-2));
+    });
+
+    test('should work with a string for `callback`', function() {
+      deepEqual(_.rest(objects, 'b'), objects.slice(-1));
+    });
   }());
 
   /*--------------------------------------------------------------------------*/