I get it with the bottle lamb; we forged quite a bond during his first week of life, and now he runs up to me for a scritch or a suck on a finger.

But the variability in the others is less easy to explain.  Some won’t let me near, and others won’t leave me alone. 702 is particularly fond of my shirttails.

Some of it is probably learned, as #701’s mother is one of my flightiest sheep, and lamb has taken after her mother.  But I assume that some of the variability is just spontaneous expression of personality, sheep reminding me that they are individuals, too.