| 11. | Larvae of species in this genus are characterized by an anal segment with retractile posterior prolegs.
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| 12. | Retractile testes are more common than truly undescended testes and do not need to be operated on.
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| 13. | There are no mantle papillae in front of the non-lamellate, non-retractile rhinophores.
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| 14. | The prostomium bears eyes, two pairs of antennae and a pair of large retractile nuchal organs.
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| 15. | The red panda is specialized as a bamboo feeder with strong, curved and sharp semi-retractile claws
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| 16. | In contrast, most caniforms are terrestrial, have non-retractile claws and tend to be plantigrade.
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| 17. | A retractile testis high in the scrotum can be difficult to distinguish from a position in the lower inguinal canal.
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| 18. | They have eight arms but lack feeding tentacles, and instead use two retractile filaments in order to capture food.
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| 19. | Many feliforms have retractile ( retractable ) or semi-retractile claws and many are arboreal or semi-arboreal.
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| 20. | Many feliforms have retractile ( retractable ) or semi-retractile claws and many are arboreal or semi-arboreal.
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