I'd definitely say PG like many others. Nothing sexual is going on there whatsoever. I mean heck, occasionally sex is even implied in some PG movies. This sort of thing is generally acceptable even in a kids movie in both Canada and the US (I've lived for long periods of time in both and know how the movie ratings work).
I would not be too worried about this even in conservative nations where it is generally unacceptable to see even a man and wife in bed together. A good example would be the movie The Muppets which was rated PG in America. The main human characters are in a loving, long term relationship and are seen in bed together as well. Oh, and they frequently say they love each other and cuddle, I think. Here's a link to the certifications in various countries for the movie:
http://www.imdb.com/title/tt1204342/par ... tification
To save you looking up the terms that they rated the movie:
Malaysia - General Audiences
India - Universal/General Audiences
Brazil - General Audiences
Argentina - ATP basically means suitable for all ages.
Hong Kong - Suitable for all Ages
Mexico - Suitable for children over 6
Portugal and Netherlands - Suitable for children aged 6 and above
Sweden - Suitable for all ages
Generally countries are lenient, however, the UAE gave the movie a PG-13 rating probably for those scenes
http://dubai.explocity.com/movie-guide/ ... pets-1803/
I'm trying to find the rating from the Kuwait premiere, but not much luck. Honestly, I think you're fine, but if you're super duper worried, go with a teen or PG-13 rating to be safe.