Cullen by Minerva Howe

Fae dragon shifter Cullen is still adjusting to becoming a guardian of the space between the human world and all the other dimensions he’s tied to. He and his two brothers are dealing with dragons and babies and more, and he doesn’t think he can handle much beyond that.
Which is when the unicorn shows up.
When a friend tells him that a house up in the mountains in Colorado is having some weird goings on, unicorn shifter Orion heads up to make sure no one is in any kind of distress. But once he’s in the dragon guardian’s house, he finds out he can’t leave unless one of the fae dragon brothers goes with him. Which would be fine if he and Cullen weren’t fated mates and there wasn’t a pesky vampire problem out in the human world.
Cullen and Orion have all the problems of any couple: families, mate bonds, and tons of insecurities. Will fighting off vampires be too much to handle on top of all of that?

This is an mpreg romance with gargoyle babies, hilarious beaver shifters, and a lot of magical family wildness.