Hi,
Dogs are usually no problem in a helicopter. I have been flying with bird dogs and herding dogs in Lapland, police dogs several places and sledge dogs in Greenland. 16 at most in a 212, with very unexperinced handlers..
They usually get a bit unsecure when lifting of but this keeps them calm, and very easy to control. Some wants to lie down, others want to look out the and enjoy the flight..
Fly safe, wiisp