From source:
 
Name: Milkweed  
“I hope my delivery service was satisfactory! if not, um…i’m sorry…”  
Parents: Coco Pommel, unknown sperm donor  
species: half cow/bull, half earth pony  
gender: female  
build: petite  
special talent: Delivering milk  
Nick names: Milky, Moo Moo
 
General Bio:  
Milky is a soft spoken, shy mare who generally wants to see everypony happy. She’s Coco’s prized possession and has always been very close to her mother, usually with her rather than her fellow classmates when she was younger. She’s a very emotional pony who is known to cry very easily, even over the silliest things.
 
Coco Pommel has always wanted her own little filly, even though she was having no luck with finding love she was still determined to be the loving mother shes always dreamed of. She eventually decided on getting a sperm donor and never specified what species of creature she’d prefer, she would love any child anyways. Come to find out her daughter would be a completely unique little filly.
 
Despite Milkweed’s submissive nature, she opened up her own milk delivery service, which would soon become the most well known milk devilry service in ponyville.
 
Extra:  
-she absolutely loves pegasi and gets jealous often how easily they can move about with their wings, if she had a pair shed be able to deliver milk in half the time!
 
-Milky likes to hang out with the cows at applejack’s farm, shes grown a strong relationship with the cows there and theyre like a second family to her
 
-whenever she finds her adoptive brother being bullied she never hesitates to protect him, tears dripping how her face, she still wouldnt let anything happen to him
 
-she mumbles to herself a lot when she becomes flustered/nervous, she developed this because she grew up with a lack of ponies to talk to
 
-once milky undo’s her braids her hair springs into a large, fluffy mess. She’s never been able to really contain it.
 
-she’s very naive and finds herself being taken advantage of for her kindness
 
-horns get stuck in everything