It's 6:10 p.m. The last CSR has locked the front door and is halfway to the car when the phone starts ringing. A pet parent wants to move Thursday's recheck to Friday. At 8:40 another call comes in: a cat hasn't touched its food since breakfast, and the caller wants to know whether to worry.
Both calls matter, in different ways. The first is a booking your schedule needs. The second needs a fast, safe handoff to someone qualified to judge it. A veterinary answering service promises to cover those hours. So does an AI receptionist, but the two work very differently. Which one fits depends on the calls your practice loses today.
Inside a traditional answering service
An answering service is a call center staffed by people. When your line forwards to them, an operator greets the caller with your practice name and works from a script you approved. Most take a message and send it on by email or text. Many will page the on-call vet when a caller's answers match the urgent list you supplied.
The strengths are real. Some callers want a human voice, and they get one. A trained operator can stay calm with a frightened pet parent. For a practice with a DVM on call overnight, a dependable paging chain is worth paying for.
The limits show up the next morning. Few services have access to your schedule, which means nothing gets booked. The desk opens to a pile of messages and spends the first hour returning calls, right when the phones are busiest. Billing is usually per minute or per call, so a holiday weekend lands as your most expensive month. And because operators often cover dozens of businesses, they won't know your DVMs by name or which days you see rabbits.
Inside an AI receptionist
An AI receptionist is software that picks up your line in a natural voice. It tells the caller up front that it's the practice's virtual assistant. Then it works from what your team has taught it: hours, services, DVMs, appointment types and house policies.
Routine calls end with the job done. It can put a nail trim or a booster into an open slot and confirm it by text from your own number. It handles the questions about parking, Saturday hours and whether you see guinea pigs. Callers can use English or Spanish, even switching partway through.
Everything else goes to a person. A billing dispute, an upset caller or a pet that sounds unwell is transferred: to a CSR during the day, and after hours to the vet on call or the emergency hospital you name. A transcript and a short summary come with every call, so nobody replays a recording to learn what was said.
How the two compare, call by call
Booking. The answering service takes a message asking for a time. The AI receptionist books the time and texts the confirmation.
Urgent calls. Both should hand off fast, following a protocol your DVMs wrote. Ask each vendor what happens, minute by minute, to an urgent call after midnight.
The morning after. With a service, your CSRs return yesterday's calls. With an AI receptionist, they read summaries and phone only the people who still need them.
Daytime overflow. Few practices forward daytime calls to a call center. The AI steps in on calls that would otherwise ring out, and your CSRs keep every other one.
Language. A service may offer Spanish on some shifts. The AI version takes Spanish at any hour, 3 a.m. included.
Cost. Services usually bill per minute or per call, so busy months cost more. AI receptionists tend to be a flat monthly fee or part of a phone plan.
Urgent calls are the real test
Neither option should ever give medical advice. That rule protects the pet, the pet parent and your DVMs. What decides the quality of either option is how fast an urgent caller reaches someone who can help.
Write the protocol with your DVMs. Decide which words or answers mean transfer right away, who takes the call at each hour, and which emergency hospital you send people to when nobody's on call. Then test it. Ring your own line at 9 p.m. with a made-up urgent call and time how long it takes to reach a person.
During the day, your CSRs face the same moment with a full waiting room. Our guide to phone triage questions covers what they ask before a sick pet goes on the schedule.
Do pet parents accept talking to AI?
Some won't. Those callers should reach a person quickly, and a good setup offers that within the first few seconds.
Most evening callers want one thing: an appointment, an answer about hours, or the comfort of knowing someone will call in the morning. If the caller hangs up with a booked time and a confirmation text from your number, few mind who answered. What irritates people is a phone tree that loops, or a voice pretending to be human. Say plainly that it's the practice's assistant, keep the greeting short, and always offer a person.
Your CSRs will have feelings about it too. Tell them clearly what it covers: the hours they're not there and the calls they can't reach. Their desk, and the pet parents at it, stay theirs.
What to teach it in the first week
On its first morning, the assistant knows nothing about your practice that nobody told it. Before it answers a single call, give it what a new CSR would learn on day one.
Start with hours, holiday closures and where to park. Add each DVM's days, the species you see and the ones you refer elsewhere. Spell out your new-client rules, the deposit policy and which appointment types it may book. Name the emergency hospital you send people to, with its address. Decide how refill requests are handled; many practices take them on a form for a DVM to approve.
Then listen. Read a handful of transcripts each day for the first two weeks and correct anything that sounded wrong. Your CSRs will spot gaps fastest, because they hear the same questions all day.
The calls nobody plans for: 11 a.m. and 12:30
Most practices think about cover after closing. The bigger loss often happens in daylight. One industry dataset puts the median clinic at 35 calls on a weekday, peaking around 11 a.m. JAVMA's 2026 secret-shopper study of 5,053 practices found 15.1% of calls reached nobody at all.
An answering service rarely helps here, because routing daytime overflow to a call center is clumsy and slow. An AI receptionist can step in only when all your lines are tied up, or while the desk takes lunch, and stay silent otherwise. Those unanswered daytime calls are often new pet parents, which is why we put the phones first in our guide to winning new clients.
Questions to ask any vendor
Whichever way you lean, ask these before signing anything. Does the caller see our number, and do texts go out from it? Can it book into our schedule, or only take messages? If a dog is struggling to breathe on a Sunday night, whose phone rings, and within how many minutes? Who can read the recordings and transcripts? Is there a contract, and what does a busy month cost? Can it handle Spanish-speaking callers well?
What we'd choose for a small practice
For most independents, an AI receptionist covers more of the calls you lose: the late-morning overflow, lunch, evenings and weekends. Keep a human path for urgent calls: the DVM on call, or an emergency hospital you trust. Practices that run true overnight on-call duty sometimes keep a live service for paging and let the AI handle everything else.
Where CompanionBooked fits on your phone lines
Our AI Receptionist answers when your CSRs can't. It introduces itself as your practice's assistant, books the routine visits, and gives your team a summary of every other call. It comes with practice phones that keep your number, plus a phone tree, call recording and an instant text to any caller who hangs up unanswered.
The phones and the AI receptionist come alongside our website work and marketing. All three come in one monthly plan, priced on a 30-minute call. Month to month, no setup fee, live in 14 days.
CompanionBooked
Our team builds vet practice websites, runs their marketing and installs the phones and AI receptionist behind the desk. We wrote this after many calls with managers weighing the two.
