MOSCOW — The Russian Orthodox Church is known for its conservatism, pro-Kremlin leanings and Byzantine aesthetics. Now add cats to the list.

Russian Orthodox priest Feodorit Senchukov and his cat Monya pose for the calendar. ANNA GALPERINA / ARTOS FELLOWSHIP

A dozen Orthodox clerics posed with their cats for a new 2016 wall calendar dubbed simply "Priest and Cats" — "Pop & Kot" in Russian.

The wall calendar featuring felines of all stripes and sizes being hugged by bearded, beaming and largely bespectacled men in glossy black-and-white pictures went on sale last week.

It combines two Italian publications — the Vatican’s Calendario Romano, featuring young and attractive priests, and Gatti di Roma, a roundup of Rome’s most photogenic cats — according to creator Xenia Loutchenko.

Selling for 990 rubles ($14.30) each, the calendar has become an online hit and has been featured in the country's top newspapers and news site. Its success has caught Loutchenko by surprise.

“It was a grassroots initiative, pure creativity,” the religious affairs journalist told told NBC News. “We did not expect such a reaction.”

The cover of 2016 "Priests and Cats" calendar. ANNA GALPERINA / ARTOS FELLOWSHIP

Since it was published, the calendar's creators received calls from more priests saying they also have cats and would have loved to pose for a shoot.

The Moscow Patriarchate, the governing body of the Russian Orthodox Church, could not be reached for comment on Monday.

Its notoriously conservative spokesman Vsevolod Chaplin earlier told Rusnovosti.ru news website that the calendar was “no great sin.”

“But I wouldn’t hang it on my wall,” said Chaplin, who is known for his rants against American policies, short skirts and gay rights.