If it involves endangered animals, including illegal selling e.g. of pangolins and leopard cats:
🐆 BruWILD 7127379
🐆 Wildlife Division 7216533
If it's regarding stray animals in general, there is no specific number to be contacted. 4/
🐍🐊 Bomba 995
Injured animals
🐈🐕 CAS (will be handled case-by-case basis due to limited resources)
Removal of stray dogs
🐕 ADC Borneo Whitestone Sdn Bhd 265 5142 (paid service) 5/
🐈🐕 Care and Action for Strays
facebook.com/careandactions…
🐈 Fyza Shelter Brunei facebook.com/239770123155988
🐈 The Love Paw Sanctuary
instagram.com/lovepawsanctua…
🐈🐕 Please adopt... Don't let them stray! (Brunei)
facebook.com/groups/5993531…
6/
That is under the purview of @JKR_Brunei, however you can inform them via Talian Darussalam @td123bn (Whatsapp: api.whatsapp.com/send?phone=673…)
There is no specific agency handling this, unfortunately. However if you would like to help, you can take the animal to the nearest vet (for a complete list you can refer to the above tweet).