Hmm.. wasn't a fan of this episode. I wonder why they decided to bring on winter in the series NOW, when spring just started here?
I thought maybe by the end of the episode they'd timeskip to spring and Tank coming out, but nope.It does really feel like an episode about coping with a pet's death though.
Maybe Equestria is in the Southern Hemisphere. Or more likely they thought they would have been coming back earlier when storyboarding.