The surveillance robot reacts to pets by detecting movement, but there is no mention of the detection or siren being selective specifically for pets. It has a motion detector and a siren, but there is no mention of automatic discrimination between humans and animals in the information available.

As far as subscriptions are concerned, there is no mention of Enabot requiring a paid subscription to use the device, apart from the standard Wi-Fi connection. The device appears to be used via the EBO Home application, with no additional subscription fees specified.

To sum up:
- Motion detection and siren are present, but selectivity for pets is not confirmed.
- No paid subscription is required apart from the Wi-Fi connection.