Is she getting more body or just getting fat? That first heat can cause some major growing up and beefing up (including more weight), but the dog shouldn't be looking fat.Okie-dobie said:
If she's starting to look fat, could be a false pregnancy. Or it could be due to the fact she didn't get as much exercise as usual while she was in season.
I always cut Razzle's food back slightly when she goes into season, knowing she won't get those play dates at the park for the next 3 weeks or so..I also put her on senior dog food once she goes into heat, and keep her on it for a couple of months to try to avoid falsies..so far, that's worked well.