An "rabbit ears" is just a colloquial name for an indoor antenna.
Well, the TV wants a coax connection, if rabbit ears don't have coax but a flat 300 ohms cable instead, all you need is an adapter like THIS. Although I should question whether a 300 ohms-only rabbit ears is suitable for TV, it maybe a AM/FM antenna, not for TV.
Well I hope so! You have found the Arc of the Covenant.
Although lately I've been surprised, apparently some latest 4K TV (they shouldn't call them TV if hey can't OTA by themselves) don't have coax.
OK if you are buying one... Many antennas can only do channels 7-13 VHS, if your local broadcast do channels 2-6, you must buy one that covers all VHS channels and they tend to be bulkier. Finding your coax connector is just but 1st base.