Which preposition to use with pettings

of Occurrences 2%

These things look like the cautious patting and petting of a spirited horse preparatory to mounting him, when it is dreaded that he may give the rider a fall.

at Occurrences 1%

Young man born of a line of brave men, who is conscious that early petting at home and a foreign education have developed physical cowardice.

in Occurrences 1%

The pets fared badly for petting in these days; they were fed and waited on, but not with the old devotion; it began to dawn on Miss Lucinda's mind that something to talk to was preferable, as a companion, even to Fun, and that there might be a stranger sweetness in receiving care and protection than in giving it.

Which preposition to use with  pettings