A tenancy agreement cannot forbid a tenant from having a pet. And once there is a tenancy agreement, a landlord cannot evict the tenant simply for having a pet. This is true even if they agreed that the tenant would not have a pet.

However, there are some cases when the landlord can apply to the LTB to evict a tenant who has a pet. These are some common examples:

• the pet is making too much noise, damaging the unit or causing other tenants to have allergic reactions;
• the breed or species is inherently dangerous (e.g. a tenant’s pit bull could be considered “inherently dangerous” even if it hasn’t bitten anyone);
• the rules of the condominium corporation does not allow pets like the one tenant has.

Source: www.sjto.gov.on.ca