Horses:
Areas marked on image file.
Case 1: Front leg on adult horse should be white up to the middle of the forearm.
Case 2: Foal's leg is whole white while adult male misses part of the white in marked area.
Case 3: Markings on foal's leg are lower than on adult mare
Mare's mane and foal's tail have some uncolored white parts (marked with arrows).
EDIT: Added more with similar issues