Grandma is Caillou and Rosie's lovely grandmother, Daddy's mother and Mommy's mother-in-law. Her real name is Rosemary. She has been in the show since Season 1.
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Grandma does many different activities. She is a good artist. She has an art room, and in several episodes she is seen painting. Grandma likes to go bird watching, too. But most of the time, she helps Caillou and Rosie learn new things, just like Mommy and Daddy. In Season 4, she and Grandpa would babysit Caillou and Rosie instead of Julie. In Caillou's Got Rhythm, She also has a piano.

She has a lot of friends who live in the nursing home. In one episode, she visits them and introduces Caillou to them. Sometimes Grandma babysits a dog named Rover, who Caillou was afraid of at first, but now enjoys playing with. Grandma and Grandpa live in a red, two-story house.

It is revealed that in the episode "Olive Muddle" that Grandma does not like beets.

Physical Appearance

Grandma usually wears a long yellow (now red) dress with a blue collar and cuffs, blue low-heeled shoes and a green headband.