diff --git a/pandas/conftest.py b/pandas/conftest.py
index 29c3abf4d1e1b..20f97bdec1107 100644
--- a/pandas/conftest.py
+++ b/pandas/conftest.py
@@ -386,8 +386,17 @@ def tz_aware_fixture(request):
 COMPLEX_DTYPES = [complex, "complex64", "complex128"]
 STRING_DTYPES = [str, 'str', 'U']
 
+DATETIME_DTYPES = ['datetime64[ns]', 'M8[ns]']
+TIMEDELTA_DTYPES = ['timedelta64[ns]', 'm8[ns]']
+
+BOOL_DTYPES = [bool, 'bool']
+BYTES_DTYPES = [bytes, 'bytes']
+OBJECT_DTYPES = [object, 'object']
+
 ALL_REAL_DTYPES = FLOAT_DTYPES + ALL_INT_DTYPES
-ALL_NUMPY_DTYPES = ALL_REAL_DTYPES + COMPLEX_DTYPES + STRING_DTYPES
+ALL_NUMPY_DTYPES = (ALL_REAL_DTYPES + COMPLEX_DTYPES + STRING_DTYPES
+                    + DATETIME_DTYPES + TIMEDELTA_DTYPES + BOOL_DTYPES
+                    + OBJECT_DTYPES + BYTES_DTYPES * PY3)  # bytes only for PY3
 
 
 @pytest.fixture(params=STRING_DTYPES)
@@ -406,8 +415,9 @@ def float_dtype(request):
     """
     Parameterized fixture for float dtypes.
 
-    * float32
-    * float64
+    * float
+    * 'float32'
+    * 'float64'
     """
 
     return request.param
@@ -418,8 +428,9 @@ def complex_dtype(request):
     """
     Parameterized fixture for complex dtypes.
 
-    * complex64
-    * complex128
+    * complex
+    * 'complex64'
+    * 'complex128'
     """
 
     return request.param
@@ -430,10 +441,11 @@ def sint_dtype(request):
     """
     Parameterized fixture for signed integer dtypes.
 
-    * int8
-    * int16
-    * int32
-    * int64
+    * int
+    * 'int8'
+    * 'int16'
+    * 'int32'
+    * 'int64'
     """
 
     return request.param
@@ -444,10 +456,10 @@ def uint_dtype(request):
     """
     Parameterized fixture for unsigned integer dtypes.
 
-    * uint8
-    * uint16
-    * uint32
-    * uint64
+    * 'uint8'
+    * 'uint16'
+    * 'uint32'
+    * 'uint64'
     """
 
     return request.param
@@ -456,16 +468,17 @@ def uint_dtype(request):
 @pytest.fixture(params=ALL_INT_DTYPES)
 def any_int_dtype(request):
     """
-    Parameterized fixture for any integer dtypes.
+    Parameterized fixture for any integer dtype.
 
-    * int8
-    * uint8
-    * int16
-    * uint16
-    * int32
-    * uint32
-    * int64
-    * uint64
+    * int
+    * 'int8'
+    * 'uint8'
+    * 'int16'
+    * 'uint16'
+    * 'int32'
+    * 'uint32'
+    * 'int64'
+    * 'uint64'
     """
 
     return request.param
@@ -474,18 +487,20 @@ def any_int_dtype(request):
 @pytest.fixture(params=ALL_REAL_DTYPES)
 def any_real_dtype(request):
     """
-    Parameterized fixture for any (purely) real numeric dtypes.
+    Parameterized fixture for any (purely) real numeric dtype.
 
-    * int8
-    * uint8
-    * int16
-    * uint16
-    * int32
-    * uint32
-    * int64
-    * uint64
-    * float32
-    * float64
+    * int
+    * 'int8'
+    * 'uint8'
+    * 'int16'
+    * 'uint16'
+    * 'int32'
+    * 'uint32'
+    * 'int64'
+    * 'uint64'
+    * float
+    * 'float32'
+    * 'float64'
     """
 
     return request.param
@@ -496,21 +511,34 @@ def any_numpy_dtype(request):
     """
     Parameterized fixture for all numpy dtypes.
 
-    * int8
-    * uint8
-    * int16
-    * uint16
-    * int32
-    * uint32
-    * int64
-    * uint64
-    * float32
-    * float64
-    * complex64
-    * complex128
+    * bool
+    * 'bool'
+    * int
+    * 'int8'
+    * 'uint8'
+    * 'int16'
+    * 'uint16'
+    * 'int32'
+    * 'uint32'
+    * 'int64'
+    * 'uint64'
+    * float
+    * 'float32'
+    * 'float64'
+    * complex
+    * 'complex64'
+    * 'complex128'
     * str
     * 'str'
     * 'U'
+    * bytes
+    * 'bytes'
+    * 'datetime64[ns]'
+    * 'M8[ns]'
+    * 'timedelta64[ns]'
+    * 'm8[ns]'
+    * object
+    * 'object'
     """
 
     return request.param
diff --git a/pandas/tests/series/test_duplicates.py b/pandas/tests/series/test_duplicates.py
index f41483405f6cc..26222637e3509 100644
--- a/pandas/tests/series/test_duplicates.py
+++ b/pandas/tests/series/test_duplicates.py
@@ -91,8 +91,11 @@ def __ne__(self, other):
         ('last', Series([False, True, True, False, False, False, False])),
         (False, Series([False, True, True, False, True, True, False]))
     ])
-def test_drop_duplicates_non_bool(any_numpy_dtype, keep, expected):
-    tc = Series([1, 2, 3, 5, 3, 2, 4], dtype=np.dtype(any_numpy_dtype))
+def test_drop_duplicates(any_numpy_dtype, keep, expected):
+    tc = Series([1, 0, 3, 5, 3, 0, 4], dtype=np.dtype(any_numpy_dtype))
+
+    if tc.dtype == 'bool':
+        pytest.skip('tested separately in test_drop_duplicates_bool')
 
     tm.assert_series_equal(tc.duplicated(keep=keep), expected)
     tm.assert_series_equal(tc.drop_duplicates(keep=keep), tc[~expected])