1000-lb Sisters season 4 episode 3, titled I Don't Want to Taco Bout It, aired on TLC this Tuesday, January 31, at 9 pm ET.In the episode, the cast members mourned the loss of Little Bit, Michael and Amy's pet dog who lived for 22 years. Michael adopted her after his father's death almost 15-16 years ago and Amy was living with her for the past 5 years. The couple had many custom-made products in their home with Little Bit's pictures on them. These included a pillow, two portraits, and a blanket.Michael wanted to have a closure ceremony/memorial service for Little Bit and also installed a tombstone which said that she would always be "in his heart." Amy called Little Bit her daughter and Michael praised their pet for always cheering him on. The two also remembered the happy times with their "daughter" and remembered how she was present during their wedding and their baby shower.1000-lb Sisters fans got emotional after seeing Amy and Michael struggle with the death of Little Bit.Vivian@highdarling_oh my goodness. the passing of little bit dogs are literally our children #1000lbSisters6oh my goodness. the passing of little bit 💔 dogs are literally our children 🐶 #1000lbSisters1000-lb Sisters fans pay tribute to Little BitFor the memorial service, Amy and Michael invited all of their family members and friends. The guests struggled to say good things about the dog, as they were not close to her, but did compliment Little Bit for never barking. View this post on Instagram Instagram PostAmy and Michael said that they did want their children to grow up with an animal but did not want to adopt a puppy so soon. Amy's sister Tammy was unable to attend the funeral but was present at the ceremony via video call. She was also seen crying. 1000-lb Sisters fans paid tribute to Little Bit on Twitter.What.Does.The.Nanny.Do.@jenm1015When my dog passed 7 years ago, my friend had a blanket with his picture on it made for me #1000lbSistersWhen my dog passed 7 years ago, my friend had a blanket with his picture on it made for me #1000lbSistersClearlyI'mFantastic💙@itsmygreylifeBarely tuning in and oh my gosh her dog died #1000lbSisters4Barely tuning in and oh my gosh her dog died 😭😭😭😭 #1000lbSisters https://t.co/GNpwburHxZVivian@highdarling_that dog was your baby! a memorial is not weird Amy! #1000lbSisters7that dog was your baby! a memorial is not weird Amy! ❤️ #1000lbSistersAuntieB63@AuntieB63@halterman_amy #1000lbSisters Beautiful way to show your love for Little Bit , she was family I understand. We have a dog cemetery of the 6 we’ve lost.4@halterman_amy #1000lbSisters Beautiful way to show your love for Little Bit , she was family💗 I understand. We have a dog cemetery of the 6 we’ve lost. https://t.co/Vdu1Gv5O9kAaron Martin@BroGod4LifeGot to show some love and have good memories of Little Bit after 22 years old it's sad she had to go it's not going to be easy to replace a dog like Little Bit 🏾 #1000lbSisters6Got to show some love and have good memories of Little Bit after 22 years old it's sad she had to go it's not going to be easy to replace a dog like Little Bit 🙏🏾🐕👼 #1000lbSisters https://t.co/hy60LcQ0HjGino’s Sandals@Kimmnng“She was a good ol’ dog” #1000lbSisters81“She was a good ol’ dog” #1000lbSistersWhat.Does.The.Nanny.Do.@jenm1015After my dog passed, my mom and I had him cremated, and then we scattered some of his ashes at his favorite places: McDonald’s drive-thru, Starbucks drive-thru, and the beach #1000lbSisters7After my dog passed, my mom and I had him cremated, and then we scattered some of his ashes at his favorite places: McDonald’s drive-thru, Starbucks drive-thru, and the beach ❤️ #1000lbSistersOn Sundays we watch 90 Day Fiance@dontcallmegngerNot gonna lie, if my dog dies at 22 years old I’m probably going to do this. #1000lbSisters34Not gonna lie, if my dog dies at 22 years old I’m probably going to do this. #1000lbSisters https://t.co/GURQcDg57cbri@brileighh11I’m not even mad at this memorial, I worked at a dog rescue for years and was distraught over every last dog i lost #1000lbSisters9I’m not even mad at this memorial, I worked at a dog rescue for years and was distraught over every last dog i lost 😩 #1000lbSisters https://t.co/lRkPwSmv94GUCCI'S MOMMIE@GMommieLil bit was soooo sweet.. may her soul rest in peace. I am over here crying over a dog I never met .. that's just how special she was.. my heart goes out to Amy and her family that loved lil bit so much. #1000lbSisters2Lil bit was soooo sweet.. may her soul rest in peace. I am over here crying over a dog I never met .. that's just how special she was.. my heart goes out to Amy and her family that loved lil bit so much. 💔💔#1000lbSistersAmy was concerned that Tammy would use Little Bit's death as an excuse to give up on her dietTammy, who is currently living in a weight-loss rehab, said that her "heart stopped" after hearing about Little Bit's death. Amy shared that Tammy used to call Little Bit her "girlfriend" and was afraid that her death would cause Tammy to give up on her dieting journey.Tammy was later heard behaving rudely in front of her therapist, even refusing to answer many questions. Amanda, Tammy and Amy's sister, said that she was happy to be at a dog's funeral instead of Tammy's, especially after her recent hospital visit where the latter had to be placed in an induced coma.1000-lb Sisters airs on TLC every Tuesday at 9 pm ET.