After the assessment under restraint, the following tests were performed (adapted from [20] and [21] ): Provoked biting: To assess reflexive biting reaction, the animal was stimulated with a cotton swab at the muzzle followed by a check for conspicuous teeth and mucosa condition. Grip strength: To assess the ability of the animal to hold its own bodyweight, the individual was placed on a cage lid which was then turned upside down. Animals being able to hold on for at least 15 sec. were recorded as successful. Vertical pole test: As a test of motor coordination and balance the animal was placed on a horizontally positioned pole (80 cm long, 1.55 cm diameter, taped) which was erected slowly to vertical position. Animals falling off before reaching vertical position were recorded. Postural reflex: The animal was placed in an empty observation cage which was then gently shaken 3 times vertically and 3 times horizontally. The presence/absence of the natural reaction to this treatment (extending all 4 limbs) was recorded.