I am under the strong impression that blink dogs summon far less friends in ID than in other dungeons. I was hunting blink dogs in ID, and when I finally found one, it summoned 5 or 6 of his friends, and nothing more after several hundreds of turns. About 5 minutes later I got bored, said to myself "ah screw it", and went to the UD instead. On UD4 I found another blink dog, and it summoned several dozens of its friends within 50 or so turns.
So, is it just me or do blink dogs behave differently in the infinite dungeon?