Jodi R.R. Smith from Mannersmith Etiquette Consulting and author of From Clueless to Class Act: Manners for the Modern Woman and From Clueless to Class Act: Manners for the Modern Man agrees that veterinary medicine is a profession where phone calls remain important and necessary. If you need to leave a voice mail message for a client, Smith offers these ideas on how to make the most of your message.
Mention the closure in the beginning of the message, convey when your business is reopening, and don't forget to wish the callers a happy holiday if the occasion calls for it. If you're away from your office, check your voicemail remotely to keep up with incoming messages if necessary. Or get voicemail to email capabilities set up on your phone

I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have become more articulate, poised, and self-assured. But hear my voicemail recording, and you’d think I was still new to the work world, a little unsure of myself — and probably not an authority. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.
Think about what you want to say and then write it down. Make edits and adjustments until it’s where you want it.