Your pet at the airport
At Brussels Airport, pets are welcome. Please ensure that they are either on a lead or securely in their crate. A friendly tip: we don't have dog toilets at the airport, so it's a good idea to walk your dog before entering the departure lounge.
If your pet is travelling with you in the cargo hold, the check-in agent will ask you to bring your pet to a special counter. This is located at the back of the departure lounge, between check-in rows 2 and 3. We'll make sure your pet is safe and comfortable from there until it's time to board. 
On arrival in Belgium, you can collect your pet from a special desk in the baggage claim area, near carousel 7. It's a good idea to collect your baggage first and then your pet. Keep your pet in the crate until you've passed through customs. If you're coming from a country where there is a risk of rabies, it's compulsory to have your pet checked by customs.
Your pet will probably need to go to the toilet after the flight; you'll find a place to go outside together just outside customs.
You should contact the ACIC and you can also register there. If you are working with a customs agent, it's best to contact them directly.