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!


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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  • So yesterday was a huge success! It was my first mastiff picnic and it was an absolute blast! I was able to see some of the babies from the Rockzie x Sergio litter and they are doing great, walking on leash listening to their new mom & dads! Paisley went home with her amazing family! Pearl & Paisley did great walking on a leash not as great as my other babies but I was impressed as it was their first time on a leash (I know! Do as I say not as I do)! The biggest highlight- Lucy from my Ruby x Wally litter earned her CGC! I was so proud not only did she earn her title she was a rockstar with all the hustle & bustle! Rich & Megan are doing such a great job with her!

    Lori Scroggs It was great to see you Angela, and meet your Mom! And I loved meeting Sergio (Grendel too...) It was great to meet a few other owners and their pups.2016-09-26T08:18:59+0000
    Cecilia Carr Definitely would like to come next year!! She looks exactly like Molasses!! 😍2016-09-25T21:20:46+0000
    Megan Jorgenson-Wervey Awww, thanks Angela! We had a great time & can't wait to get together again soon ♡2016-09-25T17:48:55+0000
    Sue Horton I really wanted to go but had Gr son BD .2016-09-25T21:51:24+0000
    Bethany Miller Bummer I couldn't make it!! 😭 next year!!2016-09-25T18:00:45+0000
    Rose Lopez Nuckles Is this Rockzie?2016-09-26T01:13:31+0000
    Shannon Daniels Great seeing you again!!!2016-09-26T01:47:38+0000
    Martha Dinneen Lucy is amazing. It shows you that if you work with your dogs they can accomplish great thing.2016-09-25T18:54:53+0000
  • Paisley is headed to a wonderful family! Thank you so much for giving her such a great home!

    Martha Dinneen She will be so loved😍2016-09-25T12:11:06+0000
    Lori Scroggs Congratulations! !!2016-09-25T18:30:34+0000
    Jennifer Quinn Yay!!!2016-09-25T16:41:20+0000
  • Bittersweet Lane Mastiffs added 2 new photos.This little monster is getting ready for Halloween!

    Lori Scroggs Who is that monster? Better get one for Grendel, the real monster-beast!!2016-09-18T00:52:27+0000
    Jennifer Quinn I love this!!!2016-09-17T18:00:46+0000
    Bridget Dinneen Awwwww!!!😍2016-09-17T15:07:57+0000