These animals have been raised together. They have been transported on trucks together. They're off-loaded, and as they're loaded into crates, the loading staff and the CFIA veterinarians and inspectors—who, as I have mentioned, are present—work together to ensure the regulatory requirements are met: that they're compatible, that they have the right amount of space, that they're in containers that are appropriate and that they're fit to travel.
On February 29th, 2024. See this statement in context.