diff --git a/setup.py b/setup.py
index dc85d33..f176609 100644
--- a/setup.py
+++ b/setup.py
@@ -1,13 +1,18 @@
 #!/usr/bin/env python
 from setuptools import setup
 from io import open
+import re
 
 def read(filename):
     with open(filename, encoding='utf-8') as file:
         return file.read()
 
+with open('telebot/version.py', 'r', encoding='utf-8') as f:  # Credits: LonamiWebs
+    version = re.search(r"^__version__\s*=\s*'(.*)'.*$",
+                        f.read(), flags=re.MULTILINE).group(1)
+
 setup(name='pyTelegramBotAPI',
-      version='3.7.2',
+      version=version,
       description='Python Telegram bot api. ',
       long_description=read('README.md'),
       long_description_content_type="text/markdown",
diff --git a/telebot/__init__.py b/telebot/__init__.py
index 589d443..1811633 100644
--- a/telebot/__init__.py
+++ b/telebot/__init__.py
@@ -878,7 +878,7 @@ class TeleBot:
 
         return types.Message.de_json(
             apihelper.send_animation(self.token, chat_id, animation, duration, caption, reply_to_message_id, reply_markup,
-                                     parse_mode, disable_notification, timeout, thumb))
+                                 parse_mode, disable_notification, timeout, thumb))
 
     def send_video_note(self, chat_id, data, duration=None, length=None,
                         reply_to_message_id=None, reply_markup=None,
diff --git a/telebot/apihelper.py b/telebot/apihelper.py
index 90c6134..e2861b9 100644
--- a/telebot/apihelper.py
+++ b/telebot/apihelper.py
@@ -509,7 +509,7 @@ def send_video(token, chat_id, data, duration=None, caption=None, reply_to_messa
 
 
 def send_animation(token, chat_id, data, duration=None, caption=None, reply_to_message_id=None, reply_markup=None,
-               parse_mode=None, disable_notification=None, timeout=None):
+               parse_mode=None, disable_notification=None, timeout=None, thumb=None):
     method_url = r'sendAnimation'
     payload = {'chat_id': chat_id}
     files = None
@@ -531,6 +531,11 @@ def send_animation(token, chat_id, data, duration=None, caption=None, reply_to_m
         payload['disable_notification'] = disable_notification
     if timeout:
         payload['connect-timeout'] = timeout
+    if thumb:
+        if not util.is_string(thumb):
+            files['thumb'] = thumb
+        else:
+            payload['thumb'] = thumb
     return _make_request(token, method_url, params=payload, files=files, method='post')
 
 
@@ -561,7 +566,7 @@ def send_voice(token, chat_id, voice, caption=None, duration=None, reply_to_mess
 
 
 def send_video_note(token, chat_id, data, duration=None, length=None, reply_to_message_id=None, reply_markup=None,
-                    disable_notification=None, timeout=None):
+                    disable_notification=None, timeout=None, thumb=None):
     method_url = r'sendVideoNote'
     payload = {'chat_id': chat_id}
     files = None
@@ -571,7 +576,7 @@ def send_video_note(token, chat_id, data, duration=None, length=None, reply_to_m
         payload['video_note'] = data
     if duration:
         payload['duration'] = duration
-    if length:
+    if length and (str(length).isdigit() and int(length) <= 639):
         payload['length'] = length
     else:
         payload['length'] = 639  # seems like it is MAX length size
@@ -583,6 +588,11 @@ def send_video_note(token, chat_id, data, duration=None, length=None, reply_to_m
         payload['disable_notification'] = disable_notification
     if timeout:
         payload['connect-timeout'] = timeout
+    if thumb:
+        if not util.is_string(thumb):
+            files['thumb'] = thumb
+        else:
+            payload['thumb'] = thumb
     return _make_request(token, method_url, params=payload, files=files, method='post')
 
 
@@ -622,7 +632,7 @@ def send_audio(token, chat_id, audio, caption=None, duration=None, performer=Non
 
 
 def send_data(token, chat_id, data, data_type, reply_to_message_id=None, reply_markup=None, parse_mode=None,
-              disable_notification=None, timeout=None, caption=None):
+              disable_notification=None, timeout=None, caption=None, thumb=None):
     method_url = get_method_by_type(data_type)
     payload = {'chat_id': chat_id}
     files = None
@@ -642,6 +652,11 @@ def send_data(token, chat_id, data, data_type, reply_to_message_id=None, reply_m
         payload['connect-timeout'] = timeout
     if caption:
         payload['caption'] = caption
+    if thumb:
+        if not util.is_string(thumb):
+            files['thumb'] = thumb
+        else:
+            payload['thumb'] = thumb
     return _make_request(token, method_url, params=payload, files=files, method='post')
 
 
diff --git a/telebot/version.py b/telebot/version.py
new file mode 100644
index 0000000..da7bcf9
--- /dev/null
+++ b/telebot/version.py
@@ -0,0 +1,3 @@
+# Versions should comply with PEP440.
+# This line is parsed in setup.py:
+__version__ = '3.7.2'