Mobs can breed when seperated, so long as the other animal in love mode is within their field of vision (a radius of eight blocks). Breeding from this distance will not affect the outcome in any way.
MCPE-8045
Mobs can breed when seperated
Resolved
Fixed
0
(Unassigned)
Confirmed
Phone - iOS - iPhone 6 Plus
iOS 8.1.3
0.10.4
0.11.0 Beta 11
Retrieved
Can confirm on Galaxy S5 Android 4.4.2