Measurements for Rabbits

Size 1: Measures 10" (a little larger than the Mini size)
Size 2: Measures 12" (in-between the Mini and Medium size)
Size 3: Measures 19" (about the same size as Medium size)
Size 4: Measures 26" (a little smaller than the Maxi size)
Size 5: Measures 31" (about the same as the Mega size)

Measurements for Bunnies

Size 1: Measures 9" (a little larger than the Mini size)
Size 2: Measures 10" (in-between the Mini and Medium size) 
Size 3: Measures 16" (about the same as Medium size)
Size 4: Measures 20.5" (a little smaller than the Maxi size)
Size 5: Measures 26" (about the same as the Mega size)

Older Maileg Bunnies & Rabbits

My: 4.5"
Micro: 5"
Mini: 10"
Medium: 18"
Maxi: 21"
Mega: 28" 
Mega Maxi: 38" 

*Your Maileg friends only fit into the clothes and furniture that corresponds to their size (medium bunnies fit into medium clothes and medium furniture).*

Mom and Dad Mouse (6 inches)
Baby Boy and Girl Mouse (2.5 inches)
Little Brother and Sister Mouse (4 inches)
Big Brother and Sister Mouse (4.5 - 5 inches)
Medium Boy and Girl Mouse (13.5 inches)
Maxi Various Mouse (19.5 inches)
Mega Princess and Prince Mouse (28 inches)

Big Brother & Big Sister Mice can fit into Micro clothing and furniture. 
Baby Mice can fit into the My Collection high chairs and other furniture. 
Baby Mice include: Sleepy Wakey Babies, Triplets, and Twins.
Medium Mice can wear the same size clothes as Best Friends.

 

All Best Friends (Bunny, Doggy, and Kitten) are 14 inches tall.
Best friends clothing options can be worn by Best Friends and Medium Mice.
Best Friends also fit into many Medium Furniture options.