Hueso especializado presente en algunos mamíferos que estabiliza el pene durante la cópula.
Mamífero acuático adaptado con una gruesa capa de grasa para mantener el calor en ambientes fríos.
Tipo de ave que recorre largas distancias estacionales en busca de mejores condiciones ambientales.
Mamífero adaptado para ambientes acuáticos con aletas en lugar de extremidades.
Proceso en el cual los animales realizan desplazamientos estacionales para acceder a mejores recursos.
Proceso de desarrollo en el que las crías nacen completamente desarrolladas y listas para moverse.
Proceso reproductivo que ocurre en ciertos animales cuando hay una fase de celo.
Grupo de mamíferos que incluye a los monotremas, los cuales ponen huevos.
Capa gruesa que poseen los cocodrilos, hecha de escamas córneas.
Estructura de la piel en un mamífero con escamas queratinosas muy desarrolladas, utilizada como protección.
Mamífero acorazado que tiene placas óseas en la piel, similar a los reptiles.
Proceso reproductivo en algunas aves y mamíferos que se realiza a lo largo de estaciones de apareamiento.
Verticales
Mecanismo en los mamíferos que implica el desplazamiento de los testículos fuera del abdomen.
Adaptación de las tortugas que les proporciona una estructura ósea externa para protegerse.
Relación evolutiva que agrupa a los prototerios, metaterios y euterios como descendientes de un ancestro común.
Estructura externa en los testículos de mamíferos que descienden fuera del abdomen.
Característica del ciclo reproductivo de los mamíferos que involucra la pérdida del revestimiento uterino si no hay fecundación.
Adaptación anatómica de las aves y mamíferos que corren, con extremidades largas y musculosas.
Proceso que las aves realizan regularmente para renovar su plumaje.
Característica que diferencia a los metaterios de los euterios, con respecto al desarrollo de sus crías.
Mamífero volador que se diferencia del ave por tener una membrana entre los dedos para volar.
Desarrollo de crías nacidas en un estado muy inmaduro y dependiente de los padres.
Mamífero perteneciente al grupo de los euterios, con crías que se desarrollan completamente en el útero.
Tipo de mamíferos que presentan un ciclo reproductivo sin menstruación, con fases de celo.
Adaptación de un ave acuática que le permite bucear y nadar eficazmente..
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It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
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