The head is seen in front resting on the foot and carrying a median non-retractile snout or rostrum, and a pair of cephalic tentacles at the base of each of which is an eye. [Please select]
0
The mouth is very retractile, and the aperture is shaped as in ordinary leeches. [Please select]
0
They are not tree-climbers, as their claws are not sufficiently retractile for that. [Please select]
0
Cocardes: retractile vesicular bodies on each side of the thorax in certain Malachidae. [Please select]
0
Although they resemble cats superficially they are not directly related to them and their claws are only partly retractile. [Please select]
0
All dogs, wild or tame, walk upon their toes with a firm, elastic gait, and their toes are not retractile. [Please select]
0
The larvæ have small retractile heads, and feed on low-growing plants, keeping themselves well concealed on the lower leaves close to the ground. [Please select]
Do you have a better example in your mind? Please submit your sentence!