An infant or calf engaged in a directed walk parallel to its mother and engaged in any of the following behaviors: adopting a Trunk-Toward or Periscope-Trunk posture while Ear-Brushing, Social-Rubbing or Pushing against her side, touching its trunk to her flank or near to her breast, grasping her breast (Grasp-Breast), hooking its trunk around her back leg (Grasp-Leg), touching or pinching her genitals (Trunk-to-Genitals), emitting a Begging-Rumble, Grumble-Rumble, Cry or Cry-Rumble or Roar or Roar-Rumble.
Selengei's 6 year male calf walks along side of her in a Solicit-Suckling posture. She stops and adopts a Suckling-Stance and he Suckles. She begins to move again and he rubs against her - Social-Rubbing - and then he Solicit-Suckling from the other side. Again she stops and he Suckles again. (Maasai Mara, Kenya)