Crumple-Horned Snorkacks are known for being shy. However, they are also extremely loyal. When a stranger entered Luna's room, Sigrid kept a close watch on him, pretending to be a stuffed animal. He stayed for a week before Luna returned from school. When she did, Luna didn't realise it at first. Sigrid was ready to pounce on him should he try to attack the girl. The two quickly said a few words to each other before the boy began to attack Luna with his mouth. One hop, and Sigrid was on the floor. Luna seemed to be defending herself well, the boy was out of breath. Another hop, and she had landed on the foot board of the bed. The two broke apart when they heard Luna's father call her name. Luna quickly scanned the room with a dazed expression on her face. When she spotted Sigrid, she looked at her pleadingly. She took that to mean that Luna wanted her to distract her father, so she squeezed under the door, hopped onto Mr. Lovegood's shoulder and began to hum a tune. He was sufficiently distracted that he went down the stairs, joining in the humming even though he didn't know the song. With her acute hearing, Sigrid was able to hear urgent but hushed whispers upstairs.