Lambie sang the I Feel Better song in 5 episodes: " The Rip Heard Round the World", " My Huggy Valentine", " Lambie Gets the Linties", " Runaway Love", and " Go West, Young Lambie" Lambie is a stuffed lamb who likes to cuddle people and toys and dance ballet. When a toy isn't feeling very well, Lambie often gives them a cuddle. During the show, Lambie is often seen looking worried when Doc examines the patient to find out what's wrong. Her job at the clinic is to dispense cuddles, which seem to be a vital part of the treatment of Doc's patients. It is also hinted that she may have feelings for Stuffy. In addition to ballet, Lambie also likes playing tea parties with her friends, including Susie Sunshine. But in the episode " Tea Party Tantrum", Susie shoves the table with her feet in temper while saying, "I don't want any tea!" According to Doc, it is hinted that Susie refuses to play tea party, even though she loves playing tea parties. By the end of the episode, when Susie has had a nap, she feels much better and happily says that she really wants to have a tea party. And in the episode " Run Down Race Car", Stuffy runs off when he hears that Ricardo Racecar should stop racing because he is out of energy. When Lambie walks to Ricardo to give him a cuddle, Stuffy runs to Lambie and hugs her. Lambie is a ballerina, just like Bella the ballerina doll.

She wears a yellow hat and scarf when she goes out in the snow. In " Think Pink", she wore a blue scarf. Lambie's voice actress Lara Jill Miller played Kari from Digimon and Henry from Henry Hugglemonster . For Halloween, Lambie was dressed up as a rabbit in " Boo-Hoo to You". She was dressed up as a teddy bear in " Hallie Halloween". Lambie has cried in the game Fixing Lambie. She also cried in two episodes of the series: " My Huggy Valentine" and " Runaway Love". She was making crying sounds in " The Rip Heard Round the World" and " Lamb in a Jam".In the show, Lambie is a very sweet character with a very sweet voice. Her biggest passion is giving cuddles to anyone who needs one, toy or person. Sometimes she may feel sad or worried when something bad happens when someone hurts her feelings, or when something happens that prevents her from cuddling. For example, in the episode " Caught Blue-Handed", when Lambie goes over to Chilly to cuddle him, Doc stops her because Chilly has caught "mystery pox". Doc issues a "cuddle-ban" to prevent the mystery pox from spreading, and Hallie warns Lambie that "I've got my eye on you", which causes Lambie some distress. Season Five: " The Pet Rescue Team!" • " A Pet for Everyone" • " The Doc McStuffins Christmas Special" • " Toys in Space" • " Adventures in Baby Land" • " Stuffy's Safari" • " Jungle Jumble" • " Arctic Exposure" • " Jumbo Mumbo" • " The Hallie Trap" • " Lost & Found" • " Bedazzled!" • " The Great McStuffins Meltdown" • " It's a Hard Doc Life"

Lambie can sometimes get into trouble when she really wants something. In " Top Lamb", Lambie really loved the new pink kitchen set. She was really excited about it and the cooking show that Doc and the toys were going to put on the next day. During the night, as she was playing with it while everyone was sleeping even though Doc told her not to, she hurt her paw and accidentally broke the pink light in the oven. Lambie was worried that Doc wouldn't be her friend anymore because she broke the kitchen set. In the morning, Lambie hid her hurt paw and the broken oven until Doc sang the "What's Going On" song. After getting her paw fixed, Doc and the other toys tell her to wait for when she gets to play with it by singing. Lambie is a slender stuffed lamb with white wool and a pink bow and tutu. She also often wears a tiara when Doc plays a princess game starring "Princess Lambie". She sometimes wears pink pajamas with lambs on them at night, mostly when she first appears in them in the episode " Dark Knight". She also wears a yellow hat and scarf when she goes out in the snow, and a pink kerchief with a flower on it when she goes camping.