You're probably better off with 'Get Together' (at least for now). Despite the recent patch, pets are STILL buggy and VERY glitched. They're constantly filling your Sims' queues with "pet me" interactions. Also, they constantly force your Sims to stop what they're doing (especially during meals) just to pet them. It gets highly annoying when your Sim is eating, but needs to put away their food into the inventory, stand up, and walk over to the cat/dog... just to pick them up and/or pet them. This happens consistently.
So far, 'Get Together' doesn't seem to have any issues currently. So yeah, I would suggest that expansion pack for now.
Edit: I don't know if this means anything, but I think it's also worth noting that I was someone who literally bashed 'Get Together' when it was first announced... but it ended up becoming my 2nd favorite expansion pack for Sims 4 (Seasons is #1).