貓眼睛在一天當中變化很明顯,早晨的時候是棗核狀的,中午像條線,晚上呈圓形。貓的瞳孔會隨著光線的強弱而發生改變。白天的光線強時貓的瞳孔就會縮小,晚上光線弱時貓會放大瞳孔,讓自己看清東西。每個剛出生的貓眼睛都是藍色的,只有當藍膜褪了,眼睛顏色才會固定下來。
貓眼睛為何放大或縮小
貓眼睛放大或縮小是由於貓的瞳孔調節眼部接收光源強弱,或貓處於緊張狀態引起的。貓的瞳孔非常有彈性,會隨著光線的強弱而收縮,早上貓的眼睛像棗核,隨著光線逐漸增強,貓會把眼睛眯成一條縫,減少刺激,避免強烈的光線傷害到眼睛。到了晚上,周圍環境光線較弱時,貓為了能看清東西就會放大瞳孔,讓更多的光線進入眼睛,這屬於正常情況,不用擔心。
貓在看到自己喜歡的東西、對某樣東西感到好奇、進入陌生的環境受到了驚嚇,或感覺到自己受到威脅時就會進入緊張狀態。這時貓的瞳孔就會放大,從而導致眼睛顏色變成全黑的,可以輕輕撫摸貓,安撫它的情緒。
貓眼睛的變化過程
貓眼睛的顏色會隨著年齡的增長而發生變化。貓在剛出生時眼睛上有一層藍灰色的薄膜,俗稱藍膜,此時眼睛呈藍灰色。
藍膜要到兩個月左右才慢慢褪去,眼睛才算發育完全,這時就可以給貓適當曬曬太陽了。一般在三月齡時貓的眼睛就會顯現出黃色、綠色、藍色、黃綠色等本來的顏色。
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