吉娃娃是一种小型犬种，以其独特的外貌和活泼可爱的个性而闻名。然而，有时我们会发现吉娃娃流眼泪的情况。那么，吉娃娃为什么会流眼泪呢？我们来一探究竟。

首先，我们需要明确的是，吉娃娃流眼泪并不一定是病态的表现。与人类一样，狗也具有泪腺，用来产生泪液。吉娃娃的泪腺可能比其他犬种更加活跃，导致过多的泪液流出，从而显得眼睛周围湿润。这可以是吉娃娃流眼泪的常见原因之一。

另外一个常见的原因是吉娃娃的泪孔堵塞。泪孔是眼泪排出的通道，当泪孔被污垢或其他物质阻塞时，眼泪无法正常排出，从而导致眼泪溢出。吉娃娃的泪孔相对较小，容易受到砂尘、眼屎等物质的影响，进而导致堵塞。

此外，吉娃娃的眼睛周围皮肤过敏也可能导致流眼泪的情况。吉娃娃可能对环境中的某些刺激物过敏，例如花粉、灰尘、家居清洁剂等。这些过敏原会刺激眼部组织，导致眼泪分泌增多，从而引起流眼泪现象。

当然，吉娃娃流眼泪的原因还有其他多种可能，例如眼睑问题、眼睛结构异常等。如果吉娃娃流眼泪严重并伴随其他症状，建议及时带它去兽医处就诊，以便进行进一步的检查和治疗。

总结起来，吉娃娃流眼泪的原因可能是泪腺活跃、泪孔堵塞、过敏或其他眼部问题。在大多数情况下，流眼泪是正常的生理现象，并不需要特别担心。但如果情况严重或伴有其他异常症状，一定要及时就诊，确保吉娃娃的健康。

English Translation:

Chihuahuas: Why Do They Shed Tears?

Chihuahuas are a small breed of dog known for their unique appearance and lively personality. However, sometimes we may notice that Chihuahuas have teary eyes. So, why do Chihuahuas shed tears? Let's find out.

Firstly, it is important to understand that tears in Chihuahuas are not necessarily a sign of illness. Just like humans, dogs have tear glands that produce tears. The tear glands in Chihuahuas may be more active than in other breeds, leading to an excess of tears that make the area around their eyes moist. This can be one common reason why Chihuahuas shed tears.

Another common reason is the blockage of tear ducts in Chihuahuas. Tear ducts are the channels through which tears are drained from the eyes. When the tear ducts are blocked by dirt or other substances, tears cannot drain properly, resulting in overflow. The tear ducts of Chihuahuas are relatively small and susceptible to blockage from sand, dust, eye discharge, and other substances.

In addition, allergies on the skin around Chihuahuas' eyes can also lead to tearing. Chihuahuas may be allergic to certain environmental irritants such as pollen, dust, household cleaning agents, and more. These allergens can stimulate the tissues around the eyes, causing increased tear production and the subsequent teary eyes.

Of course, there are various other possible reasons for Chihuahuas shedding tears, such as eyelid problems or structural abnormalities in the eyes. If the tearing in Chihuahuas is severe and accompanied by other symptoms, it is recommended to take them to a veterinarian for further examination and treatment.

In conclusion, the reasons for Chihuahuas shedding tears may include active tear glands, blocked tear ducts, allergies, or other eye-related issues. In most cases, teary eyes are a normal physiological phenomenon and there is no need to worry excessively. However, if the condition is severe or accompanied by other abnormal symptoms, timely veterinary care should be sought to ensure the health of Chihuahuas.