English Mastiff Puppies

Bittersweet Lane Mastiffs

Welcome to Bittersweet Lane Mastiffs

We are here to share our passion for this amazing breed with you and your family. We strive to better the breed and provide you with the best companion whether that is in your home, sharing the bed or in the ring sharing a well-deserved ribbon, or like in our family where we enjoy both! 

We want you to relish in the joys of Mastiff ownership as we have- whether it is the initial greeting or the trials of puppyhood or those unforgettable moments you understand what everyone who owns a mastiff is speaking about! We are here to help your dream come to life and introducing you to our incredible breed!

Mastiffs are Family Friendly


We have built our foundation on health, structural correctness, and disposition. These three concepts are what allow us to produce happy, healthy, beautiful companions. We use technology and good old-fashioned hard work to bring your family that sweet face! We feel health testing is paramount to our success. Using this as just one of our tools to ensure our future is full of life. Allowing our future owners to worry less about what can go wrong and focus on everything that is going right. 

We are committed to your success whether you are a seasoned mastiff owner or a first time pet owner- we will be right beside you along your journey! 

Contact us today


Contact Us

Angela Dineen

7101 Biggert Rd

London, Oh 43140


Email - A_dinneen@yahoo.com

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  • Bittersweet Lane Mastiffs added 4 new photos.I just received updates from "Mo's" family! He is doing well & growing like a weed! His pack is taking great care of him... of course! My favorite picture is of Clementine & Mo! I have to share.... when Clementine first met him she was sure he was not the right fit for her family (3 girls under the age of ten & a very fresh toddler brother) yet with a little talking & a few tears she left with this big boy on her lap 3 months ago now as you can see I believe they truly are an unbreakable pair!

  • Bittersweet's Diamond in the Rockz- got her first win (4th) @ her first show the MASTIFF Club of America National Speciality!!! So proud of her!

    Bittersweet Lane Mastiffs It's local for us! Wilmington, Ohio @ the Roberts Center you should come out! ;)2015-06-03T02:56:20+0000
    Bittersweet Lane Mastiffs Thank you! So proud of her!2015-06-02T10:05:35+0000
    Martha Dinneen She is a special girl and did a great job😀2015-06-02T11:35:03+0000
    Sandy Vanhorne Shes gorgeous. Congrats on her wins. Where is the Mcoa specialty this year?2015-06-03T02:54:49+0000
    Dave Thompson Congrats.2015-06-02T02:23:08+0000
  • Maggie s says enough is enough with all the racket! A gorgeous girl needs her rest!

    Bittersweet Lane Mastiffs She was so good today! We have been outside since noon & she was content playing in the stream & napping while I mowed & weed eated!2015-05-15T22:43:56+0000
    Bittersweet Lane Mastiffs No worries! We are on our way!2015-05-15T22:41:24+0000
    Martha Dinneen My beautiful girl. Bring her home 😍2015-05-15T22:40:18+0000